{"id":28,"date":"2023-12-27T19:12:38","date_gmt":"2023-03-16T20:27:05","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%9c%a8go%e8%af%ad%e8%a8%80%e4%b8%ad%e5%af%bc%e5%85%a5%e5%8c%85\/"},"modified":"2025-07-31T21:33:56","modified_gmt":"2025-07-31T13:33:56","slug":"%e5%9c%a8go%e8%af%ad%e8%a8%80%e4%b8%ad%e5%af%bc%e5%85%a5%e5%8c%85","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8go%e8%af%ad%e8%a8%80%e4%b8%ad%e5%af%bc%e5%85%a5%e5%8c%85\/","title":{"rendered":"Go\u8bed\u8a00\u5305\u5bfc\u5165\u6307\u5357\uff1a\u4ece\u57fa\u7840\u5230\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<h3>\u4ecb\u7ecd<\/h3>\n<p>\u5728\u4e0d\u540c\u9879\u76ee\u95f4\u501f\u7528\u548c\u5171\u4eab\u4ee3\u7801\u662f\u4efb\u4f55\u5e7f\u6cdb\u4f7f\u7528\u7684\u7f16\u7a0b\u8bed\u8a00\u4ee5\u53ca\u6574\u4e2a\u5f00\u6e90\u793e\u533a\u7684\u57fa\u7840\u3002\u4ee3\u7801\u590d\u7528\u4f7f\u5f97\u7a0b\u5e8f\u5458\u53ef\u4ee5\u5c06\u5927\u90e8\u5206\u65f6\u95f4\u4e13\u6ce8\u4e8e\u7f16\u5199\u7b26\u5408\u81ea\u5df1\u9700\u6c42\u7684\u4ee3\u7801\uff0c\u800c\u4ed6\u4eec\u7684\u4e00\u4e9b\u65b0\u4ee3\u7801\u5f80\u5f80\u4e5f\u80fd\u5bf9\u5176\u4ed6\u4eba\u6709\u7528\u3002\u4ed6\u4eec\u53ef\u4ee5\u51b3\u5b9a\u5c06\u8fd9\u4e9b\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u90e8\u5206\u7ec4\u7ec7\u6210\u4e00\u4e2a\u5355\u5143\uff0c\u5e76\u5728\u56e2\u961f\u5185\u6216\u66f4\u5e7f\u6cdb\u7684\u7f16\u7a0b\u793e\u533a\u4e2d\u5171\u4eab\u3002<\/p>\n<p>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u53ef\u91cd\u590d\u4f7f\u7528\u4ee3\u7801\u7684\u57fa\u672c\u5355\u5143\u88ab\u79f0\u4e3a<code>package<\/code>\uff08\u5305\uff09\u3002\u5373\u4f7f\u662f\u6700\u7b80\u5355\u7684Go\u7a0b\u5e8f\u4e5f\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u5305\uff0c\u5e76\u4e14\u53ef\u80fd\u4f1a\u4f7f\u7528\u81f3\u5c11\u4e00\u4e2a\u5176\u4ed6\u7684\u5305\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u4f60\u5c06\u7f16\u5199\u4e24\u4e2a\u5c0f\u7a0b\u5e8f\uff1a\u4e00\u4e2a\u4f7f\u7528\u6807\u51c6\u5e93\u4e2d\u7684\u5305\u6765\u751f\u6210\u968f\u673a\u6570\uff0c\u53e6\u4e00\u4e2a\u4f7f\u7528\u70ed\u95e8\u7684\u7b2c\u4e09\u65b9\u5305\u6765\u751f\u6210UUID\u3002\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u9009\u62e9\u7f16\u5199\u4e00\u4e2a\u66f4\u957f\u7684\u7a0b\u5e8f\u6765\u6bd4\u8f83\u4e24\u4e2a\u76f8\u4f3c\u7684\u6807\u51c6\u5e93\u5305\uff0c\u5bfc\u5165\u5e76\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5305\uff0c\u5c3d\u7ba1\u5b83\u4eec\u5177\u6709\u76f8\u540c\u7684\u57fa\u672c\u540d\u79f0\u3002\u6700\u540e\uff0c\u4f60\u5c06\u4f7f\u7528<code>goimports<\/code>\u5de5\u5177\u6765\u67e5\u770b\u5982\u4f55\u683c\u5f0f\u5316\u4f60\u7684\u5bfc\u5165\u90e8\u5206\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1aGo\u8bed\u8a00\u8fd8\u6709\u4e00\u4e2a\u66f4\u9ad8\u7ea7\u522b\u7684\u53ef\u91cd\u7528\u4ee3\u7801\u5355\u5143\uff1a\u6a21\u5757\u3002\u6a21\u5757\u662f\u4e00\u7ec4\u88ab\u7248\u672c\u6807\u8bb0\u7684\u5305\u7684\u96c6\u5408\u3002\u4f60\u5c06\u5728\u540e\u7eed\u6587\u7ae0\u4e2d\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Go\u6a21\u5757\u3002<\/p>\n<\/div>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5728\u5f00\u59cb\u672c\u6559\u7a0b\u4e4b\u524d\uff0c\u60a8\u53ea\u9700\u5b89\u88c5Go\u3002\u9488\u5bf9\u60a8\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u8bf7\u9605\u8bfb\u76f8\u5e94\u7684\u6559\u7a0b\u3002<\/p>\n<ul class=\"post-ul\">\n<li><a href=\"#\">\u5982\u4f55\u5728Ubuntu 20.04\u4e0a\u5b89\u88c5Go<\/a><\/li>\n<li><a href=\"#\">\u5982\u4f55\u5728macOS\u4e0a\u5b89\u88c5Go\u5e76\u8bbe\u7f6e\u672c\u5730\u7f16\u7a0b\u73af\u5883<\/a><\/li>\n<li><a href=\"#\">\u5982\u4f55\u5728Windows 10\u4e0a\u5b89\u88c5Go\u5e76\u8bbe\u7f6e\u672c\u5730\u7f16\u7a0b\u73af\u5883<\/a><\/li>\n<\/ul>\n<h2>\u6b65\u9aa41 &#8211; \u4f7f\u7528\u6807\u51c6\u5e93\u5305<\/h2>\n<p>\u4e0e\u5927\u591a\u6570\u5176\u4ed6\u8bed\u8a00\u4e00\u6837\uff0cGo\u8bed\u8a00\u5185\u7f6e\u4e86\u4e00\u4e2a\u53ef\u91cd\u7528\u4ee3\u7801\u5e93\uff0c\u4f60\u53ef\u4ee5\u7528\u4e8e\u5e38\u89c1\u4efb\u52a1\u3002\u4f60\u4e0d\u9700\u8981\u81ea\u5df1\u7f16\u5199\u4ee3\u7801\u6765\u683c\u5f0f\u5316\u548c\u6253\u5370\u5b57\u7b26\u4e32\uff0c\u6216\u8005\u53d1\u9001HTTP\u8bf7\u6c42\u7b49\u3002Go\u6807\u51c6\u5e93\u63d0\u4f9b\u4e86\u7528\u4e8e\u8fd9\u4e24\u4e2a\u4efb\u52a1\u548c\u8bb8\u591a\u5176\u4ed6\u4efb\u52a1\u7684\u5305\u3002<\/p>\n<p>\u5728\u300aGo\u7f16\u7a0b\u5165\u95e8\uff1a\u5982\u4f55\u7f16\u5199\u4f60\u7684\u7b2c\u4e00\u4e2a\u7a0b\u5e8f\u300b\u4e2d\uff0c\u4f7f\u7528\u4e86\u6807\u51c6\u5e93\u4e2d\u7684<code>fmt<\/code>\u548c<code>strings<\/code>\u5305\u6765\u7f16\u5199\u7a0b\u5e8f\u3002\u73b0\u5728\u6211\u4eec\u6765\u5199\u53e6\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u5229\u7528<code>math\/rand<\/code>\u5305\u751f\u6210\u4e00\u4e9b\u968f\u673a\u6570\u3002<\/p>\n<p>\u5728nano\u6216\u8005\u4f60\u559c\u6b22\u7684\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3a<code>random.go<\/code>\u7684\u65b0\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">nano<\/span> random.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6211\u4eec\u6765\u521b\u5efa\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u6253\u5370\u51fa\u4ece\u96f6\u5230\u4e5d\u7684\u4e94\u4e2a\u968f\u673a\u6574\u6570\u3002\u5c06\u4e0b\u9762\u7684\u4ee3\u7801\u7c98\u8d34\u5230\u4f60\u7684\u7f16\u8f91\u5668\u4e2d\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">package<\/span> main\r\n\r\n<mark><span class=\"token keyword\">import<\/span> <span class=\"token string\">\"math\/rand\"<\/span><\/mark>\r\n\r\n<span class=\"token keyword\">func<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><mark>rand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Intn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8be5\u7a0b\u5e8f\u5bfc\u5165<code>math\/rand<\/code>\u5305\uff0c\u5e76\u901a\u8fc7\u5f15\u7528\u5176\u57fa\u672c\u540d\u79f0<code>rand<\/code>\u6765\u4f7f\u7528\u5b83\u3002\u8fd9\u4e2a\u540d\u79f0\u51fa\u73b0\u5728\u6bcf\u4e2aGo\u6e90\u6587\u4ef6\u7684\u5305\u58f0\u660e\u7684\u9876\u90e8\u3002<\/p>\n<p><code>for<\/code>\u5faa\u73af\u7684\u6bcf\u4e00\u6b21\u8fed\u4ee3\u8c03\u7528<code>rand.Intn(10)<\/code>\u6765\u751f\u6210\u4e00\u4e2a\u4ecb\u4e8e\u96f6\u548c\u4e5d\u4e4b\u95f4\u7684\u968f\u673a\u6574\u6570\uff0810\u4e0d\u5305\u62ec\u5728\u5185\uff09\uff0c\u7136\u540e\u5c06\u8be5\u6574\u6570\u6253\u5370\u5230\u63a7\u5236\u53f0\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a\u5bf9<code>println()<\/code>\u7684\u8c03\u7528\u6ca1\u6709\u5f15\u7528\u5305\u540d\u3002\u8fd9\u662f\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u4e0d\u9700\u8981\u88ab\u5bfc\u5165\u3002\u901a\u5e38\u5728\u8fd9\u91cc\u4f60\u4f1a\u4f7f\u7528\u6765\u81ea<code>fmt<\/code>\u5305\u7684<code>fmt.Println()<\/code>\u51fd\u6570\uff0c\u4f46\u662f\u8fd9\u4e2a\u7a0b\u5e8f\u4f7f\u7528<code>println()<\/code>\u6765\u4ecb\u7ecd\u5185\u7f6e\u51fd\u6570\u3002<\/p>\n<\/div>\n<p>\u4fdd\u5b58\u7a0b\u5e8f\u3002\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528nano\u7f16\u8f91\u5668\uff0c\u6309\u4e0b<code>CTRL+X<\/code>\u952e\uff0c\u7136\u540e\u6309<code>Y<\/code>\u952e\u5e76\u6309\u4e0b<code>ENTER<\/code>\u952e\u786e\u8ba4\u4f60\u7684\u4fee\u6539\u3002\u7136\u540e\u8fd0\u884c\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>go run random.go\r\n<\/code><\/pre>\n<p>\u4f60\u5e94\u8be5\u770b\u5230\u4ece\u96f6\u5230\u4e5d\u7684\u4e94\u4e2a\u6574\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\n<p>\u8f93\u51fa<\/p>\n<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u770b\u8d77\u6765\u968f\u673a\u6570\u751f\u6210\u5668\u6b63\u5728\u5de5\u4f5c\uff0c\u4f46\u5982\u679c\u4f60\u4e00\u6b21\u53c8\u4e00\u6b21\u5730\u8fd0\u884c\u7a0b\u5e8f\uff0c\u5b83\u4f1a\u6253\u5370\u51fa\u76f8\u540c\u7684\u6570\u5b57\uff0c\u800c\u4e0d\u662f\u4f60\u6240\u671f\u671b\u7684\u65b0\u7684\u968f\u673a\u6570\u3002\u8fd9\u662f\u56e0\u4e3a\u6211\u4eec\u6ca1\u6709\u8c03\u7528 <code>rand.Seed()<\/code> \u51fd\u6570\uff0c\u7528\u4e00\u4e2a\u552f\u4e00\u7684\u503c\u5bf9\u968f\u673a\u6570\u751f\u6210\u5668\u8fdb\u884c\u521d\u59cb\u5316\u3002\u5982\u679c\u4e0d\u8fd9\u6837\u505a\uff0c\u8be5\u5305\u7684\u884c\u4e3a\u5c31\u597d\u50cf\u8c03\u7528\u4e86 <code>rand.Seed(1)<\/code> \u4e00\u6837\uff0c\u56e0\u6b64\u5b83\u6bcf\u6b21\u90fd\u4f1a\u751f\u6210\u76f8\u540c\u7684\u201c\u968f\u673a\u201d\u6570\u5b57\u3002<\/p>\n<p>\u6240\u4ee5\u6bcf\u6b21\u8fd0\u884c\u7a0b\u5e8f\u65f6\uff0c\u60a8\u9700\u8981\u4f7f\u7528\u4e00\u4e2a\u552f\u4e00\u7684\u503c\u6765\u4e3a\u6570\u5b57\u751f\u6210\u5668\u8bbe\u7f6e\u79cd\u5b50\u3002\u7a0b\u5e8f\u5458\u901a\u5e38\u4f7f\u7528\u5f53\u524d\u7684\u7eb3\u79d2\u7ea7\u65f6\u95f4\u6233\u3002\u8981\u83b7\u53d6\u5b83\uff0c\u60a8\u9700\u8981\u4f7f\u7528 <code>time<\/code> \u5305\u3002\u518d\u6b21\u6253\u5f00\u60a8\u7684\u7f16\u8f91\u5668\u5e76\u5728 <code>random.go<\/code> \u4e2d\u7c98\u8d34\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">package<\/span> main\r\n\r\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(\r\n<\/span>\t<span class=\"token string\">\"math\/rand\"<\/span>\r\n\t<mark><span class=\"token string\">\"time\"<\/span><\/mark>\r\n<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token keyword\">func<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">()<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t<mark>now <span class=\"token operator\">:=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">()<\/span><\/mark>\r\n\t<mark>rand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Seed<\/span><span class=\"token punctuation\">(<\/span>now<span class=\"token punctuation\">.<\/span><span class=\"token function\">UnixNano<\/span><span class=\"token punctuation\">())<\/span><\/mark>\r\n<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Numbers seeded using current date\/time:\"<\/span><span class=\"token punctuation\">,<\/span> <mark>now<span class=\"token punctuation\">.<\/span><span class=\"token function\">UnixNano<\/span><span class=\"token punctuation\">()<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>rand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Intn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">))<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u5bfc\u5165\u591a\u4e2a\u8f6f\u4ef6\u5305\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u62ec\u53f7\u521b\u5efa\u4e00\u4e2a\u5bfc\u5165\u5757\u3002\u901a\u8fc7\u4f7f\u7528\u5757\uff0c\u60a8\u53ef\u4ee5\u907f\u514d\u5728\u6bcf\u4e00\u884c\u4e0a\u91cd\u590d\u4f7f\u7528 <code>import<\/code> \u5173\u952e\u5b57\uff0c\u4f7f\u4ee3\u7801\u66f4\u6e05\u6670\u3002<\/p>\n<p>\u9996\u5148\uff0c\u60a8\u6b63\u5728\u901a\u8fc7 <code>time.Now()<\/code> \u51fd\u6570\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a <code>Time<\/code> \u7ed3\u6784\u3002\u7136\u540e\uff0c\u60a8\u5c06\u65f6\u95f4\u4f20\u9012\u7ed9 <code>rand.Seed()<\/code> \u51fd\u6570\u3002\u8be5\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a 64 \u4f4d\u6574\u6570\uff08<code>int64<\/code>\uff09\uff0c\u56e0\u6b64\u60a8\u9700\u8981\u5728 <code>now<\/code> \u7ed3\u6784\u4e0a\u4f7f\u7528 <code>Time.UnixNano()<\/code> \u65b9\u6cd5\u4ee5\u7eb3\u79d2\u7684\u5f62\u5f0f\u4f20\u5165\u65f6\u95f4\u3002\u6700\u540e\uff0c\u60a8\u6b63\u5728\u6253\u5370\u7528\u4e8e\u521d\u59cb\u5316\u968f\u673a\u6570\u751f\u6210\u5668\u7684\u65f6\u95f4\u3002<\/p>\n<p>\u73b0\u5728\u4fdd\u5b58\u5e76\u518d\u6b21\u8fd0\u884c\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go run random.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4f60\u5e94\u8be5\u770b\u5230\u7c7b\u4f3c\u8fd9\u6837\u7684\u8f93\u51fa\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Numbers seeded using current date\/time: 1674489465616954000 2 6 3 1 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u5982\u679c\u4f60\u8fd0\u884c\u7a0b\u5e8f\u591a\u6b21\uff0c\u4f60\u5e94\u8be5\u6bcf\u6b21\u90fd\u80fd\u770b\u5230\u4e0d\u540c\u7684\u6574\u6570\uff0c\u4ee5\u53ca\u7528\u4e8e\u751f\u6210\u968f\u673a\u6570\u7684\u552f\u4e00\u6574\u6570\u79cd\u5b50\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u518d\u7f16\u8f91\u4e00\u6b21\u7a0b\u5e8f\uff0c\u5c06\u79cd\u5b50\u65f6\u95f4\u4ee5\u66f4\u7528\u6237\u53cb\u597d\u7684\u683c\u5f0f\u6253\u5370\u51fa\u6765\u3002\u5c06\u5305\u542b\u7b2c\u4e00\u4e2a <code>println()<\/code> \u8c03\u7528\u7684\u90a3\u4e00\u884c\u7f16\u8f91\u6210\u8fd9\u6837\uff1a<\/p>\n<pre class=\"post-pre\"><code>\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Numbers seeded using current date\/time:\"<\/span><span class=\"token punctuation\">,<\/span> <mark>now<span class=\"token punctuation\">.<\/span><span class=\"token function\">Format<\/span><span class=\"token punctuation\">(<\/span>time<span class=\"token punctuation\">.<\/span>StampNano<span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u4f60\u6b63\u5728\u8c03\u7528 <code>Time.Format()<\/code> \u65b9\u6cd5\uff0c\u5e76\u4f20\u5165 <code>time<\/code> \u5305\u4e2d\u5b9a\u4e49\u7684\u8bb8\u591a\u683c\u5f0f\u4e4b\u4e00\u3002 <code>time.StampNano<\/code> \u5e38\u91cf\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5c06\u5176\u4f20\u9012\u7ed9 <code>Time.Format()<\/code> \u53ef\u4ee5\u8ba9\u4f60\u6253\u5370\u51fa\u6708\u4efd\u3001\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u7cbe\u786e\u5230\u7eb3\u79d2\u3002\u4fdd\u5b58\u5e76\u518d\u6b21\u8fd0\u884c\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">go<\/span> run random<span class=\"token punctuation\">.<\/span><span class=\"token keyword\">go<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Numbers seeded using current date\/time: Jan 23 10:01:50.721413000 7 6 3 7 3<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u90a3\u6bd4\u770b\u5230\u4e00\u4e2a\u8868\u793a\u81ea 1970 \u5e74 1 \u6708 1 \u65e5\u4ee5\u6765\u7ecf\u8fc7\u7684\u7eb3\u79d2\u6570\u7684\u5de8\u5927\u6574\u6570\u8981\u597d\u770b\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u7a0b\u5e8f\u4e0d\u9700\u8981\u968f\u673a\u6574\u6570\uff0c\u800c\u662f\u9700\u8981 UUIDs\uff08\u8bb8\u591a\u7a0b\u5e8f\u5458\u7528\u5b83\u4f5c\u4e3a\u8de8\u90e8\u7f72\u6570\u636e\u7247\u6bb5\u7684\u5168\u5c40\u552f\u4e00\u6807\u8bc6\u7b26\uff09\uff0c\u90a3\u8be5\u600e\u4e48\u529e\u5462\uff1fGo \u6807\u51c6\u5e93\u6ca1\u6709\u7528\u4e8e\u751f\u6210 UUIDs \u7684\u5305\uff0c\u4f46\u662f\u793e\u533a\u6709\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u770b\u770b\u5982\u4f55\u4e0b\u8f7d\u548c\u4f7f\u7528\u7b2c\u4e09\u65b9\u5305\u3002<\/p>\n<h2>\u6b65\u9aa4 2 \u2014 \u4f7f\u7528\u7b2c\u4e09\u65b9\u5305<\/h2>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5728Go\u8bed\u8a00\u4e2d\u5bfc\u5165\u5305\u300b\u7684\u7b2c3\u90e8\u5206\uff08\u51718\u90e8\u5206\uff09\u3002<\/p>\n<p>\u751f\u6210UUID\uff08\u901a\u7528\u552f\u4e00\u6807\u8bc6\u7b26\uff09\u6700\u53d7\u6b22\u8fce\u7684\u8f6f\u4ef6\u5305\u4e4b\u4e00\u662f <code>github.com\/google\/uuid<\/code>\u3002\u7b2c\u4e09\u65b9\u8f6f\u4ef6\u5305\u7684\u547d\u540d\u901a\u5e38\u91c7\u7528\u5b8c\u5168\u9650\u5b9a\u540d\u79f0\uff0c\u5176\u4e2d\u5305\u542b\u6258\u7ba1\u4ee3\u7801\u7684\u7f51\u7ad9\uff08\u4f8b\u5982 <code>github.com<\/code>\uff09\u3001\u5f00\u53d1\u5b83\u7684\u7528\u6237\u6216\u7ec4\u7ec7\uff08\u4f8b\u5982 <code>google<\/code>\uff09\u4ee5\u53ca\u57fa\u672c\u540d\u79f0\uff08\u4f8b\u5982 <code>uuid<\/code>\uff09\u3002\u5728\u5bfc\u5165\u8f6f\u4ef6\u5305\u3001\u9605\u8bfb\u5176\u5728 <a href=\"https:\/\/pkg.go.dev\/\" target=\"_blank\" rel=\"noopener\">pkg.go.dev<\/a> \u4e0a\u7684\u6587\u6863\u4ee5\u53ca\u5176\u4ed6\u5730\u65b9\u65f6\uff0c\u60a8\u5c06\u4f7f\u7528\u8f6f\u4ef6\u5305\u7684\u5b8c\u5168\u9650\u5b9a\u540d\u79f0\u3002\u7136\u800c\uff0c\u5728\u4ee3\u7801\u8bed\u53e5\u4e2d\u5f15\u7528\u5b83\u65f6\uff0c\u60a8\u53ea\u9700\u8981\u4f7f\u7528\u57fa\u672c\u540d\u79f0\u3002<\/p>\n<p>\u5728\u4e0b\u8f7d\u4e00\u4e2a\u8f6f\u4ef6\u5305\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u521d\u59cb\u5316\u4e00\u4e2a\u6a21\u5757\uff0c\u8fd9\u662f Go \u7528\u4e8e\u7ba1\u7406\u7a0b\u5e8f\u4f9d\u8d56\u53ca\u5176\u7248\u672c\u7684\u65b9\u5f0f\u3002\u8981\u521d\u59cb\u5316\u4e00\u4e2a\u6a21\u5757\uff0c\u8bf7\u4f7f\u7528 <code>go mod init<\/code> \u547d\u4ee4\uff0c\u5e76\u4f20\u5165\u60a8\u81ea\u5df1\u7684\u8f6f\u4ef6\u5305\u7684\u5b8c\u5168\u9650\u5b9a\u540d\u79f0\u3002\u5982\u679c\u60a8\u60f3\u5728 GitHub \u4e0a\u4ee5\u60a8\u7684\u7528\u6237\u540d &#8220;sammy&#8221; \u6258\u7ba1\u60a8\u7684\u6a21\u5757\uff0c\u60a8\u53ef\u4ee5\u50cf\u8fd9\u6837\u521d\u59cb\u5316\u60a8\u7684\u6a21\u5757\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go mod init github.com\/sammy\/random<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u8fd9\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a <code>go.mod<\/code> \u7684\u6587\u4ef6\u3002\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u8fd9\u4e2a\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">cat<\/span> go.mod<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>module github.com\/sammy\/random go <mark>1.19<\/mark><\/code><\/pre>\n<p>\u8fd9\u4e2a\u6587\u4ef6\u5fc5\u987b\u51fa\u73b0\u5728\u4efb\u4f55\u5c06\u4f5c\u4e3a Go \u6a21\u5757\u5206\u53d1\u7684 Go \u4ee3\u7801\u5e93\u7684\u6839\u76ee\u5f55\u4e2d\u3002\u5b83\u81f3\u5c11\u5fc5\u987b\u5b9a\u4e49\u6a21\u5757\u540d\u79f0\u548c\u6240\u9700\u7684 Go \u7248\u672c\u3002\u60a8\u81ea\u5df1\u7684 Go \u7248\u672c\u53ef\u80fd\u4e0d\u540c\u4e8e\u4e0a\u9762\u663e\u793a\u7684\u7248\u672c\u3002<\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u4e0d\u4f1a\u5206\u53d1\u60a8\u7684\u6a21\u5757\uff0c\u4f46\u662f\u8fd9\u4e00\u6b65\u9aa4\u5bf9\u4e8e\u4e0b\u8f7d\u548c\u4f7f\u7528\u7b2c\u4e09\u65b9\u8f6f\u4ef6\u5305\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<p>\u73b0\u5728\u4f7f\u7528 <code>go get<\/code> \u547d\u4ee4\u4e0b\u8f7d\u7b2c\u4e09\u65b9 UUID \u6a21\u5757\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go get github.com\/google\/uuid<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u8fd9\u5c06\u4e0b\u8f7d\u6700\u65b0\u7248\u672c\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>go: downloading github.com\/google\/uuid v1.3.0\r\ngo: added github.com\/google\/uuid v1.3.0<\/code><\/pre>\n<p>\u8be5\u8f6f\u4ef6\u5305\u88ab\u653e\u7f6e\u5728\u60a8\u7684\u672c\u5730\u76ee\u5f55 <code>$GOPATH\/pkg\/mod\/<\/code> \u4e2d\u3002\u5982\u679c\u60a8\u7684 shell \u4e2d\u6ca1\u6709\u663e\u5f0f\u8bbe\u7f6e <code>$GOPATH<\/code>\uff0c\u5219\u5176\u9ed8\u8ba4\u503c\u4e3a <code>$HOME\/go<\/code>\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5982\u679c\u60a8\u7684\u672c\u5730\u7528\u6237\u540d\u4e3a sammy \u5e76\u4e14\u60a8\u6b63\u5728\u8fd0\u884c macOS\uff0c\u8be5\u8f6f\u4ef6\u5305\u5c06\u88ab\u4e0b\u8f7d\u5230 <code>\/Users\/sammy\/go\/pkg\/mod<\/code> \u4e2d\u3002\u60a8\u53ef\u4ee5\u8fd0\u884c <code>go env GOMODCACHE<\/code> \u547d\u4ee4\u6765\u67e5\u770b Go \u5c06\u4e0b\u8f7d\u6a21\u5757\u653e\u7f6e\u5728\u4f55\u5904\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u6765\u67e5\u770b\u60a8\u7684\u65b0\u4f9d\u8d56\u6a21\u5757\u7684 <code>go.mod<\/code> \u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">cat<\/span> <mark>\/Users\/sammy\/go<\/mark>\/pkg\/mod\/github.com\/google\/uuid@v1.3.0\/go.mod<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>module github.com\/google\/uuid<\/code><\/pre>\n<p>\u770b\u8d77\u6765\u8fd9\u4e2a\u6a21\u5757\u6ca1\u6709\u4f9d\u8d56\u7b2c\u4e09\u65b9\u5e93\uff0c\u5b83\u53ea\u4f7f\u7528\u4e86 Go \u6807\u51c6\u5e93\u7684\u5305\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u6a21\u5757\u7684\u7248\u672c\u5305\u542b\u5728\u5176\u76ee\u5f55\u540d\u79f0\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u8ba9\u60a8\u5728\u540c\u4e00\u4e2a\u7a0b\u5e8f\u5185\u6216\u4e0d\u540c\u7a0b\u5e8f\u4e4b\u95f4\u5f00\u53d1\u548c\u6d4b\u8bd5\u76f8\u540c\u8f6f\u4ef6\u5305\u7684\u591a\u4e2a\u7248\u672c\u3002<\/p>\n<p>\u73b0\u5728\u518d\u6b21\u67e5\u770b\u60a8\u81ea\u5df1\u7684 <code>go.mod<\/code> \u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">cat<\/span> go.mod<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>module github.com\/sammy\/random\r\ngo 1.19\r\nrequire github.com\/google\/uuid v1.3.0 \/\/ indirect<\/code><\/pre>\n<p><code>go get<\/code> \u547d\u4ee4\u5728\u60a8\u5f53\u524d\u7684\u76ee\u5f55\u4e2d\u6ce8\u610f\u5230\u4e86 <code>go.mod<\/code> \u6587\u4ef6\uff0c\u5e76\u66f4\u65b0\u5b83\u4ee5\u53cd\u6620\u60a8\u7a0b\u5e8f\u7684\u65b0\u4f9d\u8d56\u6027\uff0c\u5305\u62ec\u5176\u7248\u672c\u3002\u73b0\u5728\u60a8\u53ef\u4ee5\u5728\u60a8\u7684\u5305\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u5305\u3002\u5728\u60a8\u7684\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3a <code>uuid.go<\/code> \u7684\u65b0\u6587\u4ef6\uff0c\u5e76\u7c98\u8d34\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">package<\/span> main\r\n\r\n<mark><span class=\"token keyword\">import<\/span> <span class=\"token string\">\"github.com\/google\/uuid\"<\/span><\/mark>\r\n\r\n<span class=\"token keyword\">func<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><mark>uuid<span class=\"token punctuation\">.<\/span><span class=\"token function\">New<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">String<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6b64\u7a0b\u5e8f\u4e0e <code>random.go<\/code> \u76f8\u4f3c\uff0c\u4f46\u662f\u5b83\u4f7f\u7528 <code>github.com\/google\/uuid<\/code> \u6765\u751f\u6210\u5e76\u6253\u5370\u51fa\u4e94\u4e2a UUID\uff0c\u800c\u4e0d\u662f\u4f7f\u7528 <code>math\/rand<\/code> \u6765\u751f\u6210\u5e76\u6253\u5370\u51fa\u4e94\u4e2a\u6574\u6570\u3002<\/p>\n<p>\u4fdd\u5b58\u65b0\u7684\u6587\u4ef6\u5e76\u8fd0\u884c\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go run uuid.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u60a8\u7684\u8f93\u51fa\u5e94\u8be5\u7c7b\u4f3c\u4e8e\u8fd9\u4e2a\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5728Go\u8bed\u8a00\u4e2d\u5bfc\u5165\u5305\u300b\u7684\u7b2c4\u90e8\u5206\uff08\u51718\u90e8\u5206\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p><code>github.com\/google\/uuid<\/code>\u5305\u4f7f\u7528\u6807\u51c6\u5e93\u5305<code>crypto\/rand<\/code>\u751f\u6210\u8fd9\u4e9bUUID\uff0c\u5b83\u4e0e\u60a8\u5728<code>random.go<\/code>\u4e2d\u4f7f\u7528\u7684<code>math\/rand<\/code>\u5305\u7c7b\u4f3c\u4f46\u6709\u6240\u4e0d\u540c\u3002\u5982\u679c\u60a8\u9700\u8981\u540c\u65f6\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5305\uff0c\u600e\u4e48\u529e\u5462\uff1f\u5b83\u4eec\u90fd\u6709\u4e00\u4e2a\u57fa\u672c\u540d\u79f0<code>rand<\/code>\uff0c\u90a3\u4e48\u60a8\u5982\u4f55\u5728\u4ee3\u7801\u4e2d\u5f15\u7528\u6bcf\u4e2a\u4e0d\u540c\u7684\u5305\u5462\uff1f\u8ba9\u6211\u4eec\u63a5\u4e0b\u6765\u6765\u770b\u770b\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h2>\u6b65\u9aa43 \u2014 \u5bfc\u5165\u5177\u6709\u76f8\u540c\u540d\u79f0\u7684\u5305<\/h2>\n<p><code>math\/rand<\/code>\u7684\u6587\u6863\u8bf4\u660e\u5b83\u5b9e\u9645\u4e0a\u751f\u6210\u7684\u662f\u4f2a\u968f\u673a\u6570\uff0c\u5e76\u4e14\u201c\u4e0d\u9002\u7528\u4e8e\u5bf9\u5b89\u5168\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u5de5\u4f5c\u201d\u3002\u5bf9\u4e8e\u8fd9\u79cd\u5de5\u4f5c\uff0c\u6211\u4eec\u5e94\u8be5\u4f7f\u7528<code>crypto\/rand<\/code>\u3002\u4f46\u662f\uff0c\u5982\u679c\u5bf9\u4e8e\u4f60\u7684\u7a0b\u5e8f\u6765\u8bf4\u6574\u6570\u7684\u968f\u673a\u6027\u8d28\u91cf\u5e76\u4e0d\u91cd\u8981\u5462\uff1f\u4e5f\u8bb8\u4f60\u771f\u7684\u53ea\u9700\u8981\u4efb\u610f\u7684\u6570\u5b57\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\u6765\u6bd4\u8f83\u8fd9\u4e24\u4e2a<code>rand<\/code>\u5305\u7684\u6027\u80fd\uff0c\u4f46\u5728\u8fd9\u6837\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u4f60\u4e0d\u80fd\u901a\u8fc7<code>rand<\/code>\u540d\u79f0\u5f15\u7528\u4e24\u4e2a\u5305\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0cGo\u5141\u8bb8\u5728\u5bfc\u5165\u5305\u65f6\u9009\u62e9\u4e00\u4e2a\u66ff\u4ee3\u7684\u672c\u5730\u540d\u79f0\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u5982\u4f55\u5bfc\u5165\u5177\u6709\u76f8\u540c\u57fa\u672c\u540d\u79f0\u7684\u4e24\u4e2a\u5305:<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(<\/span>\r\n    <span class=\"token string\">\"math\/rand\"<\/span>\r\n    <mark>crand<\/mark> <span class=\"token string\">\"crypto\/rand\"<\/span>\r\n<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u8981\u4e0d\u4e0e\u5176\u4ed6\u5305\u540d\u91cd\u590d\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u4efb\u4f55\u559c\u6b22\u7684\u522b\u540d\u5e76\u5c06\u5176\u653e\u5728\u5b8c\u5168\u9650\u5b9a\u7684\u5305\u540d\u5de6\u8fb9\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u522b\u540d\u662f<code>crand<\/code>\u3002\u8bf7\u6ce8\u610f\uff0c\u522b\u540d\u5468\u56f4\u6ca1\u6709\u5f15\u53f7\u3002\u5728\u5305\u542b\u6b64\u5bfc\u5165\u5757\u7684\u6e90\u6587\u4ef6\u7684\u5176\u4f59\u90e8\u5206\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u60a8\u9009\u62e9\u7684\u540d\u79f0<code>crand<\/code>\u6765\u8bbf\u95ee<code>crypto\/rand<\/code>\u5305\u3002<\/p>\n<p>\u4f60\u8fd8\u53ef\u4ee5\u5c06\u5305\u5bfc\u5165\u5230\u81ea\u5df1\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\uff08\u4f7f\u7528\u70b9<code>.<\/code>\u4f5c\u4e3a\u522b\u540d\uff09\u6216\u8005\u7a7a\u6807\u8bc6\u7b26\uff08\u4f7f\u7528\u4e0b\u5212\u7ebf<code>_<\/code>\u4f5c\u4e3a\u522b\u540d\uff09\u3002\u60f3\u4e86\u89e3\u66f4\u591a\uff0c\u8bf7\u9605\u8bfbGo\u6587\u6863\u3002<\/p>\n<p>\u4e3a\u4e86\u8bf4\u660e\u60a8\u53ef\u80fd\u60f3\u8981\u5982\u4f55\u4f7f\u7528\u5177\u6709\u76f8\u540c\u540d\u79f0\u7684\u8f6f\u4ef6\u5305\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u5e76\u8fd0\u884c\u4e00\u4e2a\u66f4\u957f\u7684\u7a0b\u5e8f\uff0c\u4f7f\u7528\u8fd9\u4e24\u4e2a\u8f6f\u4ef6\u5305\u751f\u6210\u968f\u673a\u6574\u6570\uff0c\u5e76\u6d4b\u91cf\u6bcf\u79cd\u60c5\u51b5\u4e0b\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u3002\u8fd9\u90e8\u5206\u662f\u53ef\u9009\u7684\uff1b\u5982\u679c\u60a8\u4e0d\u611f\u5174\u8da3\uff0c\u8bf7\u8df3\u5230\u7b2c4\u6b65\u3002<\/p>\n<h3>\u6bd4\u8f83 math\/rand \u548c crypto\/rand (\u53ef\u9009)<\/h3>\n<h4>\u83b7\u53d6\u547d\u4ee4\u884c\u53c2\u6570<\/h4>\n<p>\u9996\u5148\uff0c\u5728\u60a8\u7684\u5de5\u4f5c\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3a<code>compare.go<\/code>\u7684\u7b2c\u4e09\u4e2a\u65b0\u6587\u4ef6\uff0c\u5e76\u5c06\u4ee5\u4e0b\u7a0b\u5e8f\u7c98\u8d34\u8fdb\u53bb\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">package<\/span> main\r\n\r\n<span class=\"token keyword\">import<\/span> <span class=\"token string\">\"os\"<\/span>\r\n<span class=\"token keyword\">import<\/span> <span class=\"token string\">\"strconv\"<\/span>\r\n\r\n<span class=\"token keyword\">func<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t<span class=\"token comment\">\/\/ \u7528\u6237\u5fc5\u987b\u4f20\u5165\u8981\u751f\u6210\u7684\u6574\u6570\u6570\u91cf<\/span>\r\n\t<span class=\"token keyword\">if<\/span> <span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span>os<span class=\"token punctuation\">.<\/span>Args<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">2<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u7528\u6cd5:\\n\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"  go run compare.go &lt;\u6574\u6570\u6570\u91cf&gt;\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\t\t<span class=\"token keyword\">return<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tn<span class=\"token punctuation\">,<\/span> err <span class=\"token operator\">:=<\/span> strconv<span class=\"token punctuation\">.<\/span><span class=\"token function\">Atoi<\/span><span class=\"token punctuation\">(<\/span>os<span class=\"token punctuation\">.<\/span>Args<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!=<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u53ef\u80fd\u7528\u6237\u6ca1\u6709\u4f20\u5165\u6574\u6570<\/span>\r\n\t\t<span class=\"token function\">panic<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> \r\n\t<span class=\"token punctuation\">}<\/span>\r\n\r\n\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u7528\u6237\u8981\u6c42\u751f\u6210 \"<\/span> <span class=\"token operator\">+<\/span> strconv<span class=\"token punctuation\">.<\/span><span class=\"token function\">Itoa<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">+<\/span> <span class=\"token string\">\" \u4e2a\u6574\u6570\u3002\"<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u53ef\u4ee5\u8ba9\u4f60\u901a\u8fc7<code>rand<\/code>\u5305\u751f\u6210\u7528\u6237\u7ed9\u5b9a\u6570\u91cf\u7684\u4f2a\u968f\u673a\u6574\u6570\u3002\u5b83\u4f7f\u7528<code>os<\/code>\u548c<code>strconv<\/code>\u6807\u51c6\u5e93\u5305\u5c06\u5355\u4e2a\u547d\u4ee4\u884c\u53c2\u6570\u8f6c\u6362\u4e3a\u6574\u6570\u3002\u5982\u679c\u6ca1\u6709\u4f20\u5165\u53c2\u6570\uff0c\u5b83\u4f1a\u6253\u5370\u4f7f\u7528\u8bf4\u660e\u5e76\u9000\u51fa\u3002<\/p>\n<p>\u8fd0\u884c\u7a0b\u5e8f\uff0c\u4f7f\u7528\u4e00\u4e2a\u53c2\u6570\u4e3a10\uff0c\u786e\u4fdd\u5176\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go run compare.go <span class=\"token number\">10<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code>[\u8f93\u51fa]\r\n\u7528\u6237\u8981\u6c42\u751f\u6210 10 \u4e2a\u6574\u6570\u3002\r\n<\/code><\/pre>\n<p>\u76ee\u524d\u4e3a\u6b62\uff0c\u4e00\u5207\u90fd\u8fd8\u4e0d\u9519\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u4f7f\u7528<code>math\/rand<\/code>\u5305\u751f\u6210\u968f\u673a\u6574\u6570\uff0c\u5c31\u50cf\u4e4b\u524d\u4e00\u6837\uff0c\u4f46\u8fd9\u6b21\u4f60\u8fd8\u8981\u8ba1\u7b97\u5b8c\u6210\u6240\u9700\u7684\u65f6\u95f4\u3002<\/p>\n<h4>\u7b2c\u4e00\u9636\u6bb5\u2014\u2014\u6d4b\u91cf math\/rand \u6027\u80fd<\/h4>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5728Go\u8bed\u8a00\u4e2d\u5bfc\u5165\u5305\u300b\u7684\u7b2c5\u90e8\u5206\uff08\u51718\u90e8\u5206\uff09\u3002<\/p>\n<p>\u5185\u5bb9\u7247\u6bb5\uff1a\u5220\u9664\u6700\u540e\u4e00\u4e2a<code>println()<\/code>\u8bed\u53e5\uff0c\u5e76\u7528\u4ee5\u4e0b\u5185\u5bb9\u66ff\u6362\uff1a<\/p>\n<pre class=\"post-pre\"><code>\t<span class=\"token comment\">\/\/ \u9636\u6bb5 1 \u2014 \u4f7f\u7528 math\/rand<\/span>\r\n\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u5b57\u8282\u5207\u7247<\/span>\r\n\tb1 <span class=\"token operator\">:=<\/span> <span class=\"token function\">make<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token builtin\">byte<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u65f6\u95f4<\/span>\r\n\tstart <span class=\"token operator\">:=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u751f\u6210\u5668<\/span>\r\n\trand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Seed<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">.<\/span><span class=\"token function\">UnixNano<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u751f\u6210\u4f2a\u968f\u673a\u6570<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\tb1<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token function\">byte<\/span><span class=\"token punctuation\">(<\/span><mark>rand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Intn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u9b54\u6cd5\u53d1\u751f\u7684\u5730\u65b9\uff01<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\t<span class=\"token comment\">\/\/ \u8ba1\u7b97\u8017\u65f6<\/span>\r\n\telapsed <span class=\"token operator\">:=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c n \u975e\u5e38\u5927\uff0c\u53ea\u6253\u5370\u5c11\u91cf\u6570\u5b57<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>b1<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tfmt<span class=\"token punctuation\">.<\/span><span class=\"token function\">Printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4f7f\u7528 math\/rand \u751f\u6210 %v \u4e2a\u4f2a\u968f\u673a\u6570\u8017\u65f6: %v\\n\"<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">,<\/span> elapsed<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u60a8\u6b63\u5728\u4f7f\u7528\u5185\u7f6e\u51fd\u6570<code>make()<\/code>\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684\u5b57\u8282\u5207\u7247\uff08<code>[]byte<\/code>\uff09\uff0c\u7528\u4e8e\u5b58\u50a8\u751f\u6210\u7684\u6574\u6570\uff08\u4ee5\u5b57\u8282\u5f62\u5f0f\uff09\u3002\u5176\u957f\u5ea6\u662f\u7528\u6237\u8bf7\u6c42\u7684\u6574\u6570\u6570\u91cf\u3002<\/p>\n<p>\u7136\u540e\uff0c\u60a8\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\uff0c\u5e76\u4f7f\u7528\u5b83\u521d\u59cb\u5316\u968f\u673a\u6570\u751f\u6210\u5668\uff0c\u8fd9\u4e0e\u6b65\u9aa41\u4e2d<code>random.go<\/code>\u6587\u4ef6\u4e2d\u7684\u505a\u6cd5\u76f8\u540c\u3002<\/p>\n<p>\u5728\u6b64\u4e4b\u540e\uff0c\u60a8\u5c06\u751f\u6210n\u4e2a\u4ecb\u4e8e0\u5230255\u4e4b\u95f4\u7684\u4f2a\u968f\u673a\u6574\u6570\uff0c\u5e76\u5c06\u6bcf\u4e2a\u6574\u6570\u8f6c\u6362\u4e3a\u5b57\u8282\u5e76\u653e\u5165\u5b57\u8282\u5207\u7247\u4e2d\u3002\u4e3a\u4ec0\u4e48\u9009\u62e90\u5230255\u4e4b\u95f4\u7684\u6574\u6570\uff1f\u56e0\u4e3a\u60a8\u5373\u5c06\u7f16\u5199\u7684<code>crypto\/rand<\/code>\u4ee3\u7801\u751f\u6210\u7684\u662f\u5b57\u8282\uff0c\u800c\u4e0d\u662f\u4efb\u610f\u5927\u5c0f\u7684\u6574\u6570\uff0c\u6211\u4eec\u5e94\u8be5\u5bf9\u5305\u8fdb\u884c\u7b49\u6548\u6bd4\u8f83\u3002\u4e00\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f8\u4f4d\uff0c\u53ef\u4ee5\u75280\u5230255\u7684\u65e0\u7b26\u53f7\u6574\u6570\u6765\u8868\u793a\u3002\uff08\u5b9e\u9645\u4e0a\uff0cGo\u8bed\u8a00\u4e2d\u7684<code>byte<\/code>\u7c7b\u578b\u662f<code>uint8<\/code>\u7c7b\u578b\u7684\u522b\u540d\u3002\uff09<\/p>\n<p>\u6700\u540e\uff0c\u53ea\u6709\u5f53\u7528\u6237\u8bf7\u6c42\u751f\u6210\u5927\u91cf\u6574\u6570\u65f6\uff0c\u60a8\u624d\u6253\u5370\u524d\u4e94\u4e2a\u5b57\u8282\u3002\u6253\u5370\u51e0\u4e2a\u6574\u6570\u53ea\u662f\u4e3a\u4e86\u786e\u4fdd\u6570\u503c\u751f\u6210\u5668\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<p>\u5728\u8fd0\u884c\u7a0b\u5e8f\u4e4b\u524d\uff0c\u4e0d\u8981\u5fd8\u8bb0\u5c06\u60a8\u4f7f\u7528\u7684\u65b0\u5305\u6dfb\u52a0\u5230\u60a8\u7684\u5bfc\u5165\u4ee3\u7801\u5757\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(<\/span>\r\n\t<mark><span class=\"token string\">\"fmt\"<\/span><\/mark>\r\n\t<mark><span class=\"token string\">\"math\/rand\"<\/span><\/mark>\r\n\t<span class=\"token string\">\"os\"<\/span>\r\n\t<span class=\"token string\">\"strconv\"<\/span>\r\n\t<mark><span class=\"token string\">\"time\"<\/span><\/mark>\r\n<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u6dfb\u52a0\u4e86\u9ad8\u4eae\u90e8\u5206\u540e\uff0c\u8bf7\u8fd0\u884c\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go run compare.go <span class=\"token number\">10<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>189 203 209 238 235 \u4f7f\u7528 <code>math\/rand<\/code> \u751f\u6210 10 \u4e2a\u4f2a\u968f\u673a\u6570\u6240\u9700\u65f6\u95f4\uff1a33.417\u00b5s<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u751f\u6210\u5341\u4e2a\u4ecb\u4e8e 0 \u5230 255 \u4e4b\u95f4\u7684\u6574\u6570\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u5b57\u8282\u5207\u7247\u4e2d\uff0c\u8017\u65f6 33.417 \u5fae\u79d2\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u5176\u4e0e <code>crypto\/rand<\/code> \u7684\u6027\u80fd\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n<h4>\u7b2c\u4e8c\u9636\u6bb5 \u2014 \u6d4b\u91cf <code>crypto\/rand<\/code> \u6027\u80fd<\/h4>\n<p>\u5728\u6dfb\u52a0\u4f7f\u7528 <code>crypto\/rand<\/code> \u7684\u4ee3\u7801\u4e4b\u524d\uff0c\u8bf7\u6309\u7167\u4e4b\u524d\u6f14\u793a\u7684\u65b9\u5f0f\u5c06\u8be5\u5305\u6dfb\u52a0\u5230\u5bfc\u5165\u6a21\u5757\u4e2d\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(<\/span>\r\n\t<span class=\"token string\">\"fmt\"<\/span>\r\n\t<span class=\"token string\">\"math\/rand\"<\/span>\r\n\t<mark>crand <span class=\"token string\">\"crypto\/rand\"<\/span><\/mark>\r\n\t<span class=\"token string\">\"os\"<\/span>\r\n\t<span class=\"token string\">\"strconv\"<\/span>\r\n\t<span class=\"token string\">\"time\"<\/span>\r\n<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c06\u4ee5\u4e0b\u4ee3\u7801\u8ffd\u52a0\u5230\u4f60\u7684 <code>main()<\/code> \u51fd\u6570\u7684\u672b\u5c3e\uff1a<\/p>\n<pre class=\"post-pre\"><code>\t<span class=\"token comment\">\/\/ \u7b2c\u4e8c\u9636\u6bb5 \u2014 \u4f7f\u7528 crypto\/rand<\/span>\r\n\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u5b57\u8282\u5207\u7247<\/span>\r\n\tb2 <span class=\"token operator\">:=<\/span> <span class=\"token function\">make<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[]<\/span><span class=\"token builtin\">byte<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u65f6\u95f4\uff08\u6ce8\u610f\uff1a\u65e0\u9700\u4e3a\u968f\u673a\u6570\u751f\u6210\u5668\u8bbe\u7f6e\u79cd\u5b50\uff09<\/span>\r\n\tstart <span class=\"token operator\">=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u751f\u6210\u4f2a\u968f\u673a\u6570<\/span>\r\n\t<span class=\"token boolean\">_<\/span><span class=\"token punctuation\">,<\/span> err <span class=\"token operator\">=<\/span> <mark>crand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span>b2<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token comment\">\/\/ \u6838\u5fc3\u64cd\u4f5c\uff01<\/span>\r\n\t<span class=\"token comment\">\/\/ \u8ba1\u7b97\u8017\u65f6<\/span>\r\n\telapsed <span class=\"token operator\">=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c\u51fa\u9519\u5219\u9000\u51fa<\/span>\r\n\t<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!=<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">panic<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c n \u975e\u5e38\u5927\uff0c\u5219\u53ea\u6253\u5370\u5c11\u91cf\u6570\u5b57<\/span>\r\n\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>b2<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tfmt<span class=\"token punctuation\">.<\/span><span class=\"token function\">Printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4f7f\u7528 crypto\/rand \u751f\u6210 %v \u4e2a\u4f2a\u968f\u673a\u6570\u6240\u9700\u65f6\u95f4\uff1a%v\\n\"<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">,<\/span> elapsed<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u6b64\u4ee3\u7801\u5c3d\u53ef\u80fd\u4e0e\u7b2c\u4e00\u9636\u6bb5\u7684\u4ee3\u7801\u76f8\u4f3c\u3002\u60a8\u6b63\u5728\u751f\u6210\u5927\u5c0f\u4e3a <code>n<\/code> \u7684\u5b57\u8282\u5207\u7247\uff0c\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\uff0c\u751f\u6210 <code>n<\/code> \u4e2a\u5b57\u8282\uff0c\u8ba1\u7b97\u7ecf\u8fc7\u7684\u65f6\u95f4\uff0c\u6700\u540e\u6253\u5370\u4e94\u4e2a\u6574\u6570\u548c\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5728\u4f7f\u7528 <code>crypto\/rand<\/code> \u5305\u65f6\uff0c\u65e0\u9700\u663e\u5f0f\u5730\u8bbe\u7f6e\u968f\u673a\u6570\u751f\u6210\u5668\u7684\u79cd\u5b50\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\"><strong>\u6ce8\u610f\uff1a<\/strong><code>crypto\/rand<\/code> \u8fd8\u5305\u62ec\u4e00\u4e2a <code>Int()<\/code> \u51fd\u6570\uff0c\u4f46\u6211\u4eec\u5728\u6b64\u793a\u4f8b\u4e2d\u4f7f\u7528 <code>Read()<\/code> \u662f\u56e0\u4e3a\u5b83\u5728\u5305\u6587\u6863\u4e2d\u662f\u552f\u4e00\u7684\u793a\u4f8b\u4ee3\u7801\u4e2d\u4f7f\u7528\u7684\u51fd\u6570\u3002\u60a8\u53ef\u4ee5\u968f\u610f\u81ea\u884c\u63a2\u7d22 <code>crypto\/rand<\/code> \u5305\u3002<\/p>\n<\/div>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5728Go\u8bed\u8a00\u4e2d\u5bfc\u5165\u5305\u300b\u7684\u7b2c7\u90e8\u5206\uff08\u51718\u90e8\u5206\uff09\u3002<\/p>\n<p>\u5185\u5bb9\u7247\u6bb5: \u4f60\u7684\u6574\u4e2a `compare.go` \u7a0b\u5e8f\u5e94\u8be5\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">package<\/span> main\r\n\r\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(\r\n<\/span>\t<span class=\"token string\">\"fmt\"<\/span>\r\n\t<mark><span class=\"token string\">\"math\/rand\"<\/span><\/mark>\r\n\t<mark>crand <span class=\"token string\">\"crypto\/rand\"<\/span><\/mark>\r\n\t<span class=\"token string\">\"os\"<\/span>\r\n\t<span class=\"token string\">\"strconv\"<\/span>\r\n\t<span class=\"token string\">\"time\"<\/span>\r\n<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token keyword\">func<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">()<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t<span class=\"token comment\">\/\/ \u7528\u6237\u5fc5\u987b\u4f20\u5165\u8981\u751f\u6210\u7684\u6574\u6570\u6570\u91cf\r\n<\/span>\t<span class=\"token keyword\">if<\/span> <span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span>os<span class=\"token punctuation\">.<\/span>Args<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">2<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u7528\u6cd5:\\n\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"  go run compare.go &lt;\u6574\u6570\u6570\u91cf&gt;\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\t\t<span class=\"token keyword\">return<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tn<span class=\"token punctuation\">,<\/span> err <span class=\"token operator\">:=<\/span> strconv<span class=\"token punctuation\">.<\/span><span class=\"token function\">Atoi<\/span><span class=\"token punctuation\">(<\/span>os<span class=\"token punctuation\">.<\/span>Args<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!=<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u53ef\u80fd\u7528\u6237\u6ca1\u6709\u4f20\u5165\u6574\u6570\r\n<\/span>\t\t<span class=\"token function\">panic<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\r\n\t<span class=\"token comment\">\/\/ \u9636\u6bb51 \u2014 \u4f7f\u7528 math\/rand \u5305\r\n<\/span>\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u5b57\u8282\u5207\u7247\r\n<\/span>\tb1 <span class=\"token operator\">:=<\/span> <span class=\"token function\">make<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[]<\/span><span class=\"token builtin\">byte<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u65f6\u95f4\r\n<\/span>\tstart <span class=\"token operator\">:=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">()<\/span>\r\n\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u751f\u6210\u5668\r\n<\/span>\trand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Seed<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">.<\/span><span class=\"token function\">UnixNano<\/span><span class=\"token punctuation\">())<\/span>\r\n\t<span class=\"token comment\">\/\/ \u751f\u6210\u4f2a\u968f\u673a\u6570\r\n<\/span>\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t\tb1<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token function\">byte<\/span><span class=\"token punctuation\">(<\/span><mark>rand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Intn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">256<\/span><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u6838\u5fc3\u64cd\u4f5c\uff01\r\n<\/span>\t<span class=\"token punctuation\">}<\/span>\r\n\t<span class=\"token comment\">\/\/ \u8ba1\u7b97\u8017\u65f6\r\n<\/span>\telapsed <span class=\"token operator\">:=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">().<\/span><span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c n \u975e\u5e38\u5927\uff0c\u53ea\u6253\u5370\u524d\u51e0\u4e2a\u6570\u5b57\r\n<\/span>\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>b1<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tfmt<span class=\"token punctuation\">.<\/span><span class=\"token function\">Printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4f7f\u7528 math\/rand \u751f\u6210 %v \u4e2a\u4f2a\u968f\u673a\u6570\u8017\u65f6: %v\\n\"<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">,<\/span> elapsed<span class=\"token punctuation\">)<\/span>\r\n\r\n\t<span class=\"token comment\">\/\/ \u9636\u6bb52 \u2014 \u4f7f\u7528 crypto\/rand \u5305\r\n<\/span>\t<span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u5b57\u8282\u5207\u7247\r\n<\/span>\tb2 <span class=\"token operator\">:=<\/span> <span class=\"token function\">make<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[]<\/span><span class=\"token builtin\">byte<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u65f6\u95f4\uff08\u6ce8\u610f\uff1a\u65e0\u9700\u4e3a\u968f\u673a\u6570\u751f\u6210\u5668\u8bbe\u7f6e\u79cd\u5b50\uff09\r\n<\/span>\tstart <span class=\"token operator\">=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">()<\/span>\r\n\t<span class=\"token comment\">\/\/ \u751f\u6210\u4f2a\u968f\u673a\u6570\r\n<\/span>\t<span class=\"token boolean\">_<\/span><span class=\"token punctuation\">,<\/span> err <span class=\"token operator\">=<\/span> <mark>crand<span class=\"token punctuation\">.<\/span><span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span>b2<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token comment\">\/\/ \u6838\u5fc3\u64cd\u4f5c\uff01\r\n<\/span>\t<span class=\"token comment\">\/\/ \u8ba1\u7b97\u8017\u65f6\r\n<\/span>\telapsed <span class=\"token operator\">=<\/span> time<span class=\"token punctuation\">.<\/span><span class=\"token function\">Now<\/span><span class=\"token punctuation\">().<\/span><span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c\u51fa\u9519\u5219\u9000\u51fa\r\n<\/span>\t<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!=<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t\t<span class=\"token function\">panic<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\t<span class=\"token comment\">\/\/ \u5982\u679c n \u975e\u5e38\u5927\uff0c\u53ea\u6253\u5370\u524d\u51e0\u4e2a\u6570\u5b57\r\n<\/span>\t<span class=\"token keyword\">for<\/span> i <span class=\"token operator\">:=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span> <span class=\"token punctuation\">{\r\n<\/span>\t\t<span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>b2<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\r\n\t<span class=\"token punctuation\">}<\/span>\r\n\tfmt<span class=\"token punctuation\">.<\/span><span class=\"token function\">Printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\u4f7f\u7528 crypto\/rand \u751f\u6210 %v \u4e2a\u4f2a\u968f\u673a\u6570\u8017\u65f6: %v\\n\"<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">,<\/span> elapsed<span class=\"token punctuation\">)<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u53c2\u6570\u4e3a10\u8fd0\u884c\u7a0b\u5e8f\uff0c\u4f7f\u7528\u6bcf\u4e2a\u5305\u751f\u6210\u5341\u4e2a8\u4f4d\u6574\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go run compare.go <span class=\"token number\">10<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>145 65 231 211 250<\/p>\n<p>\u4f7f\u7528 math\/rand \u751f\u6210 10 \u4e2a\u4f2a\u968f\u673a\u6570\u6240\u9700\u65f6\u95f4\uff1a32.5\u00b5s<\/p>\n<p>101 188 250 45 208<\/p>\n<p>\u4f7f\u7528 crypto\/rand \u751f\u6210 10 \u4e2a\u4f2a\u968f\u673a\u6570\u6240\u9700\u65f6\u95f4\uff1a42.667\u00b5s<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5728\u6b64\u793a\u4f8b\u7684\u6267\u884c\u4e2d\uff0c<code>math\/rand<\/code> \u5305\u6bd4 <code>crypto\/rand<\/code> \u5305\u7a0d\u5fae\u5feb\u4e00\u4e9b\u3002\u5c1d\u8bd5\u591a\u6b21\u8fd0\u884c <code>compare.go<\/code>\uff0c\u5e76\u5c06\u53c2\u6570\u8bbe\u7f6e\u4e3a 10\u3002\u7136\u540e\u5c1d\u8bd5\u751f\u6210\u4e00\u5343\u4e2a\u6574\u6570\uff0c\u6216\u8005\u4e00\u767e\u4e07\u4e2a\u3002\u54ea\u4e2a\u5305\u59cb\u7ec8\u66f4\u5feb\u5462\uff1f<\/p>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u7a0b\u5e8f\u65e8\u5728\u5c55\u793a\u5982\u4f55\u5728\u540c\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u4e24\u4e2a\u540d\u79f0\u76f8\u540c\u3001\u529f\u80fd\u76f8\u4f3c\u7684\u5305\u3002\u5b83\u5e76\u4e0d\u610f\u5473\u7740\u63a8\u8350\u5176\u4e2d\u4e00\u4e2a\u5305\u800c\u4e0d\u662f\u53e6\u4e00\u4e2a\u3002\u5982\u679c\u4f60\u60f3\u8981\u6269\u5c55 <code>compare.go<\/code>\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 <code>math\/stats<\/code> \u5305\u6765\u6bd4\u8f83\u6bcf\u4e2a\u5305\u751f\u6210\u7684\u5b57\u8282\u7684\u968f\u673a\u6027\u3002\u65e0\u8bba\u4f60\u6b63\u5728\u7f16\u5199\u4ec0\u4e48\u6837\u7684\u7a0b\u5e8f\uff0c\u8bc4\u4f30\u4e0d\u540c\u7684\u5305\u5e76\u9009\u62e9\u6700\u9002\u5408\u4f60\u9700\u6c42\u7684\u624d\u662f\u4f60\u7684\u8d23\u4efb\u3002<\/p>\n<p>\u6700\u540e\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u5982\u4f55\u4f7f\u7528 <code>goimports<\/code> \u5de5\u5177\u683c\u5f0f\u5316\u5bfc\u5165\u58f0\u660e\u3002<\/p>\n<h2>\u7b2c\u56db\u6b65 \u2014 \u4f7f\u7528 Goimports<\/h2>\n<p>\u6709\u65f6\u5019\u5728\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\uff0c\u5f53\u60a8\u6d41\u7545\u5730\u8fdb\u884c\u7f16\u7a0b\u65f6\uff0c\u53ef\u80fd\u4f1a\u5fd8\u8bb0\u5bfc\u5165\u60a8\u6b63\u5728\u4f7f\u7528\u7684\u5305\uff0c\u6216\u8005\u5220\u9664\u60a8\u4e0d\u9700\u8981\u7684\u5305\u3002<code>goimports<\/code> \u547d\u4ee4\u884c\u5de5\u5177\u4e0d\u4ec5\u53ef\u4ee5\u683c\u5f0f\u5316\u60a8\u7684\u5bfc\u5165\u58f0\u660e\u548c\u5176\u4ed6\u4ee3\u7801\uff0c\u4f7f\u5176\u6210\u4e3a <code>gofmt<\/code> \u7684\u66f4\u5177\u529f\u80fd\u6027\u7684\u66ff\u4ee3\u54c1\uff0c\u8fd8\u53ef\u4ee5\u4e3a\u60a8\u4ee3\u7801\u5f15\u7528\u7684\u5305\u8865\u5145\u4efb\u4f55\u7f3a\u5931\u7684\u5bfc\u5165\uff0c\u5e76\u5220\u9664\u672a\u4f7f\u7528\u7684\u5305\u7684\u5bfc\u5165\u3002<\/p>\n<p>\u5de5\u5177\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5e76\u6ca1\u6709\u968f Go \u4e00\u8d77\u5b89\u88c5\uff0c\u6240\u4ee5\u7acb\u5373\u4f7f\u7528 <code>go install<\/code> \u6765\u5b89\u88c5\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">go <span class=\"token function\">install<\/span> golang.org\/x\/tools\/cmd\/goimports@latest<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u5c06\u628a <code>goimports<\/code> \u4e8c\u8fdb\u5236\u6587\u4ef6\u653e\u7f6e\u5728\u4f60\u7684 <code>$GOPATH\/bin<\/code> \u76ee\u5f55\u4e2d\u3002\u5982\u679c\u4f60\u6309\u7167\u6559\u7a0b\u5728 macOS \u4e0a\u5b89\u88c5 Go \u5e76\u8bbe\u7f6e\u672c\u5730\u7f16\u7a0b\u73af\u5883\uff08\u6216\u8005\u6839\u636e\u4f60\u7684\u64cd\u4f5c\u7cfb\u7edf\u9009\u62e9\u76f8\u5e94\u7684\u6559\u7a0b\uff09\u8fdb\u884c\u64cd\u4f5c\uff0c\u90a3\u4e48\u8be5\u76ee\u5f55\u5e94\u5df2\u5728\u4f60\u7684 <code>$PATH<\/code> \u4e2d\u3002\u5c1d\u8bd5\u8fd0\u884c\u8be5\u5de5\u5177\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">goimports <span class=\"token parameter variable\">&#8211;help<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5982\u679c\u60a8\u65e0\u6cd5\u770b\u5230\u5de5\u5177\u7684\u4f7f\u7528\u8bf4\u660e\uff0c\u5219\u8868\u793a <code>$GOPATH\/bin<\/code> \u4e0d\u5728\u60a8\u7684 <code>$PATH<\/code> \u4e2d\u3002\u8bf7\u9605\u8bfb\u9002\u7528\u4e8e\u60a8\u64cd\u4f5c\u7cfb\u7edf\u7684 Go \u73af\u5883\u8bbe\u7f6e\u6307\u5357\u6765\u8bbe\u7f6e\u5b83\u3002<\/p>\n<p>\u4e00\u65e6 <code>goimports<\/code> \u5728\u60a8\u7684 <code>$PATH<\/code> \u4e2d\uff0c\u4ece <code>random.go<\/code> \u6587\u4ef6\u4e2d\u79fb\u9664\u6574\u4e2a\u5bfc\u5165\u5757\u3002\u7136\u540e\uff0c\u4f7f\u7528 <code>-d<\/code> \u9009\u9879\u8fd0\u884c <code>goimports<\/code>\uff0c\u4ee5\u663e\u793a\u5b83\u8981\u6dfb\u52a0\u7684\u5dee\u5f02\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">goimports <span class=\"token parameter variable\">-d<\/span> random.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Outputs\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>diff -u random.go.orig random.go &#8212; random.go.orig 2023-01-25 16:29:38 +++ random.go 2023-01-25 16:29:38 @@ -1,5 +1,10 @@ package main +import (<br \/>\n + &#8220;math\/rand&#8221;<br \/>\n + &#8220;time&#8221;<br \/>\n +)<br \/>\n + func main() { now := time.Now() rand.Seed(now.UnixNano())<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5f88\u4ee4\u4eba\u5370\u8c61\u6df1\u523b\uff0c\u4f46\u662f <code>goimports<\/code> \u4e5f\u53ef\u4ee5\u8bc6\u522b\u5e76\u6dfb\u52a0\u7b2c\u4e09\u65b9\u5305\uff0c\u53ea\u9700\u901a\u8fc7 <code>go get<\/code> \u5728\u672c\u5730\u5b89\u88c5\u3002\u4ece <code>uuid.go<\/code> \u4e2d\u5220\u9664 import \u5e76\u8fd0\u884c <code>goimports<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">goimports <span class=\"token parameter variable\">-d<\/span> uuid.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>diff -u uuid.go.orig uuid.go &#8212; uuid.go.orig 2023-01-25 16:32:56 +++ uuid.go 2023-01-25 16:32:56 @@ -1,8 +1,9 @@ package main +import &#8220;github.com\/google\/uuid&#8221; + func main() { for i := 0; i &lt; 5; i++ { println(uuid.New().String()) } }<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u73b0\u5728\u7f16\u8f91 <code>uuid.go<\/code> \u6587\u4ef6\uff0c\u5e76\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>\u6dfb\u52a0\u4e00\u4e2a\u5bfc\u5165 <code>math\/rand<\/code> \u7684\u8bed\u53e5\uff0c\u76ee\u524d\u4ee3\u7801\u4e2d\u6ca1\u6709\u7528\u5230\u5b83\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li>\u5c06\u5185\u5efa\u7684 <code>println()<\/code> \u51fd\u6570\u6539\u4e3a <code>fmt.Println()<\/code>\uff0c\u4f46\u4e0d\u8981\u6dfb\u52a0 <code>import \"fmt\"<\/code>\u3002<\/li>\n<\/ol>\n<div><code>uuid.go<\/code><\/p>\n<pre class=\"post-pre\"><code>package main\r\n\r\n<mark>import \"math\/rand\"<\/mark>\r\n\r\nfunc main() {\r\n\tfor i := 0; i &lt; 5; i++ {\r\n\t\t<mark>fmt.Println<\/mark>(uuid.New().String())\r\n\t}\r\n}\r\n<\/code><\/pre>\n<\/div>\n<p>\u4fdd\u5b58\u6587\u4ef6\u5e76\u518d\u6b21\u8fd0\u884c <code>goimports<\/code>\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">goimports <span class=\"token parameter variable\">-d<\/span> uuid.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>diff -u uuid.go.orig uuid.go &#8212; uuid.go.orig 2023-01-25 16:36:28 +3 uuid.go 2023-01-25 16:36:28 @@ -1,10 +1,13 @@ package main -import &#8220;math\/rand&#8221; +import (<br \/>\n + &#8220;fmt&#8221;<br \/>\n + &#8220;github.com\/google\/uuid&#8221;<br \/>\n +)<br \/>\n + func main() { for i := 0; i &lt; 5; i++ { fmt.Println(uuid.New().String()) } }<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u4e2a\u5de5\u5177\u4e0d\u4ec5\u53ef\u4ee5\u6dfb\u52a0\u7f3a\u5931\u7684\u5bfc\u5165\uff0c\u8fd8\u53ef\u4ee5\u5220\u9664\u4e0d\u5fc5\u8981\u7684\u5bfc\u5165\u3002\u540c\u65f6\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5b83\u5c06\u5bfc\u5165\u8bed\u53e5\u653e\u7f6e\u5728\u62ec\u53f7\u4e2d\u7684\u4e00\u4e2a\u5757\u5185\uff0c\u800c\u4e0d\u662f\u5728\u6bcf\u4e00\u884c\u4e0a\u4f7f\u7528 <code>import<\/code> \u5173\u952e\u5b57\u3002<\/p>\n<p>\u8981\u5c06\u66f4\u6539\u5199\u5165 <code>uuid.go<\/code>\uff08\u6216\u4efb\u4f55\u6587\u4ef6\uff09\u800c\u4e0d\u662f\u5c06\u5176\u8f93\u51fa\u5230\u7ec8\u7aef\uff0c\u8bf7\u4f7f\u7528 <code>goimports<\/code> \u7684 <code>-w<\/code> \u9009\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">goimports <span class=\"token parameter variable\">-w<\/span> uuid.go<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4f60\u5e94\u8be5\u8bbe\u7f6e\u4f60\u7684\u6587\u672c\u7f16\u8f91\u5668\u6216\u8005\u96c6\u6210\u5f00\u53d1\u73af\u5883\uff0c\u5f53\u4f60\u4fdd\u5b58\u4e00\u4e2a <code>.go<\/code> \u6587\u4ef6\u65f6\u8c03\u7528 <code>goimports<\/code>\uff0c\u8fd9\u6837\u4f60\u7684\u6e90\u4ee3\u7801\u6587\u4ef6\u5c31\u4f1a\u59cb\u7ec8\u4fdd\u6301\u683c\u5f0f\u826f\u597d\u3002\u5982\u524d\u6240\u8ff0\uff0c<code>goimports<\/code> \u53d6\u4ee3\u4e86 <code>gofmt<\/code>\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u7684\u6587\u672c\u7f16\u8f91\u5668\u5df2\u7ecf\u4f7f\u7528 <code>gofmt<\/code>\uff0c\u5c31\u628a\u5b83\u914d\u7f6e\u6210\u4f7f\u7528 <code>goimports<\/code>\u3002<\/p>\n<p>\u53e6\u5916\uff0c<code>goimports<\/code> \u8fd8\u4f1a\u5bf9\u4f60\u7684\u5bfc\u5165\u8fdb\u884c\u5f3a\u5236\u6392\u5e8f\u3002\u8bd5\u56fe\u624b\u52a8\u7ef4\u62a4\u5bfc\u5165\u7684\u987a\u5e8f\u53ef\u80fd\u4f1a\u5f88\u7e41\u7410\u4e14\u5bb9\u6613\u51fa\u9519\uff0c\u6240\u4ee5\u8ba9 <code>goimports<\/code> \u4e3a\u4f60\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u5427\u3002<\/p>\n<p>\u5982\u679c Go \u56e2\u961f\u66f4\u6539\u4e86 Go \u6e90\u6587\u4ef6\u7684\u5b98\u65b9\u683c\u5f0f\uff0c\u4ed6\u4eec\u5c06\u4f1a\u66f4\u65b0 <code>goimports<\/code> \u4ee5\u53cd\u6620\u8fd9\u4e9b\u66f4\u6539\uff0c\u56e0\u6b64\u4f60\u5e94\u8be5\u5b9a\u671f\u66f4\u65b0 <code>goimports<\/code> \u4ee5\u786e\u4fdd\u4f60\u7684\u4ee3\u7801\u59cb\u7ec8\u7b26\u5408\u6700\u65b0\u7684\u6807\u51c6\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u4f7f\u7528\u5e38\u7528\u7684\u8f6f\u4ef6\u5305\u6765\u5e2e\u52a9\u751f\u6210\u968f\u673a\u6570\u548c UUID\uff0c\u521b\u5efa\u5e76\u8fd0\u884c\u4e86\u4e24\u4e2a\u4e0d\u8d85\u8fc7\u5341\u884c\u7684\u7a0b\u5e8f\u3002Go \u751f\u6001\u7cfb\u7edf\u4e2d\u7684\u8f6f\u4ef6\u5305\u4e30\u5bcc\u591a\u6837\u4e14\u5199\u5f97\u5f88\u597d\uff0c\u6240\u4ee5\u4f7f\u7528 Go \u7f16\u5199\u65b0\u7a0b\u5e8f\u5e94\u8be5\u662f\u4e00\u79cd\u4e50\u8da3\uff0c\u60a8\u4f1a\u53d1\u73b0\u81ea\u5df1\u80fd\u591f\u8f7b\u677e\u5730\u7f16\u5199\u6ee1\u8db3\u7279\u5b9a\u9700\u6c42\u7684\u5b9e\u7528\u7a0b\u5e8f\uff0c\u6bd4\u60a8\u60f3\u8c61\u7684\u8981\u8f7b\u677e\u3002<\/p>\n<p>\u8bf7\u67e5\u770b\u7cfb\u5217\u6559\u7a0b\u7684\u4e0b\u4e00\u4e2a\u6559\u7a0b\uff0c\u5b66\u4e60\u5982\u4f55\u5728 Go \u4e2d\u7f16\u5199\u5305\u3002\u7136\u540e\uff0c\u5982\u679c\u4f60\u613f\u610f\uff0c\u53ef\u4ee5\u63d0\u524d\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Go \u6a21\u5757\uff0c\u4ee5\u4fbf\u5c06\u5305\u7ec4\u5408\u5728\u4e00\u8d77\u5e76\u4f5c\u4e3a\u4e00\u4e2a\u6574\u4f53\u5206\u53d1\u7ed9\u4ed6\u4eba\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ecb\u7ecd \u5728\u4e0d\u540c\u9879\u76ee\u95f4\u501f\u7528\u548c\u5171\u4eab\u4ee3\u7801\u662f\u4efb\u4f55\u5e7f\u6cdb\u4f7f\u7528\u7684\u7f16\u7a0b\u8bed\u8a00\u4ee5\u53ca\u6574\u4e2a\u5f00\u6e90\u793e\u533a\u7684\u57fa\u7840\u3002\u4ee3\u7801\u590d\u7528\u4f7f\u5f97\u7a0b\u5e8f\u5458\u53ef\u4ee5\u5c06\u5927\u90e8\u5206 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[290,292,288,291,289],"class_list":{"0":"post-28","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-go-modules","8":"tag-go","10":"tag-291","11":"tag-289"},"yoast_head":"<!-- This site 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