{"id":44831,"date":"2022-11-08T09:47:44","date_gmt":"2024-01-31T11:37:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/"},"modified":"2024-04-28T23:38:50","modified_gmt":"2024-04-28T15:38:50","slug":"44831-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/","title":{"rendered":""},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>\u300c\u51e6\u7406\u304c\u901f\u3044\u300d\u300c\u4e26\u884c\u51e6\u7406\u300d\u304c\u5f97\u610f\u3068\u3044\u3046\u3053\u3068\u304b\u3089\u3001<br \/>\n\u4eca\u5f8c\u5927\u898f\u6a21web\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3067\u91cd\u5b9d\u3055\u308c\u308b\u3068\u601d\u3044\u307e\u3057\u305f\u306e\u3067\u3001<br \/>\n\u5b66\u7fd2\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2>\u53c2\u8003\u30b5\u30a4\u30c8<\/h2>\n<p>\u4ee5\u4e0b\u3092\u5b9f\u65bd\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>Welcome to a tour of Go<\/p>\n<h2>\u74b0\u5883<\/h2>\n<p>GoogleChrome<br \/>\n\u203b\u30d6\u30e9\u30a6\u30b6\u64cd\u4f5c\u3060\u3051\u3067\u5b66\u7fd2\u3067\u304d\u308b\u305f\u3081\u3001\u30a8\u30c7\u30a3\u30bf\u3092\u7528\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u203bCentOS8\u3078\u306eGo\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u624b\u9806\u3067\u3059\u3002\u3088\u308d\u3057\u3051\u308c\u3070\u3001\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002<br \/>\nCentOS8\u3078\u306eGo\u8a00\u8a9e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u624b\u9806<\/p>\n<h2>\u57fa\u672c\u64cd\u4f5c<\/h2>\n<p>Welcome!<\/p>\n<p>Hello World\u306e\u5b9f\u884c\u624b\u9806\u3067\u3059\u3002<\/p>\n<h2>\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9<\/h2>\n<p>Packages, variables, and functions.<\/p>\n<p>Go \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u57fa\u672c\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\u300cpackage main\u300d\u304b\u3089\u59cb\u307e\u308b\u3002<\/ul>\n<p>\u3059\u3079\u3066\u306f\u3053\u3053\u304b\u3089\u59cb\u307e\u308b<\/p>\n<ul class=\"post-ul\">\u95a2\u6570\u306b\u3064\u3044\u3066<\/ul>\n<p>\u5f15\u6570\u306b\u8a2d\u5b9a\u3059\u308b\u95a2\u6570\u306b\u306f\u3001\u578b\u540d\u3092\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308b<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">\/\/x\u3068y\u304c\u8a72\u5f53<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">add<\/span><span class=\"p\">(<\/span><span class=\"n\">x<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span> <span class=\"kt\">int<\/span><span class=\"p\">)<\/span> <span class=\"kt\">int<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">x<\/span> <span class=\"o\">+<\/span> <span class=\"n\">y<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u305f\u3060\u3057\u3001\u95a2\u6570\u306e\uff12\u3064\u4ee5\u4e0a\u306e\u5f15\u6570\u304c\u540c\u3058\u578b\u3067\u3042\u308b\u5834\u5408\u306b\u306f\u3001\u6700\u5f8c\u306e\u578b\u3092\u6b8b\u3057\u3066\u7701\u7565\u3057\u3066\u8a18\u8ff0\u3067\u304d\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">\/\/x\u3068y\u304c\u8a72\u5f53<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">add<\/span><span class=\"p\">(<\/span><span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span> <span class=\"kt\">int<\/span><span class=\"p\">)<\/span> <span class=\"kt\">int<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">x<\/span> <span class=\"o\">+<\/span> <span class=\"n\">y<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u95a2\u6570\u306f\u8907\u6570\u306e\u623b\u308a\u5024\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u308b<\/ul>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"c\">\/\/\u95a2\u6570\u5074<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">swap<\/span><span class=\"p\">(<\/span><span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">y<\/span><span class=\"p\">,<\/span> <span class=\"n\">x<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u547c\u3073\u51fa\u3059\u5074<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">a<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">swap<\/span><span class=\"p\">(<\/span><span class=\"s\">\"hello\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"world\"<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">a<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"k\">func<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"n\">world<\/span> <span class=\"n\">hello<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u623b\u308a\u5024\u3068\u306a\u308b\u5909\u6570\u306b\u540d\u524d\u3092\u3064\u3051\u308b<\/ul>\n<p>\u623b\u308a\u5024\u3068\u306a\u308b\u5909\u6570\u306b\u540d\u524d\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<br \/>\n\u623b\u308a\u5024\u306b\u540d\u524d\u3092\u3064\u3051\u308b\u3068\u3001\u95a2\u6570\u306e\u6700\u521d\u3067\u5b9a\u7fa9\u3057\u305f\u5909\u6570\u540d\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u540d\u524d\u3092\u3064\u3051\u305f\u623b\u308a\u5024\u306e\u5909\u6570\u3092\u4f7f\u3046\u3068\u3001<br \/>\nreturn \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306b\u4f55\u3082\u66f8\u304b\u305a\u306b\u623b\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<br \/>\n\u203b\u9577\u3044\u95a2\u6570\u3067\u4f7f\u3046\u3068\u8aad\u307f\u3084\u3059\u3055( readability )\u306b\u60aa\u5f71\u97ff\u304c\u3042\u308b\u305f\u3081\u3001<br \/>\n\u6ce8\u610f\u304c\u5fc5\u8981\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"c\">\/\/(x, y int)\u306e\u90e8\u5206\u304c\u540d\u524d\u4ed8\u304d\u5909\u6570<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">split<\/span><span class=\"p\">(<\/span><span class=\"n\">sum<\/span> <span class=\"kt\">int<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span> <span class=\"kt\">int<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">x<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sum<\/span> <span class=\"o\">*<\/span> <span class=\"m\">4<\/span> <span class=\"o\">\/<\/span> <span class=\"m\">9<\/span>\r\n    <span class=\"n\">y<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sum<\/span> <span class=\"o\">-<\/span> <span class=\"n\">x<\/span>\r\n    <span class=\"k\">return<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">split<\/span><span class=\"p\">(<\/span><span class=\"m\">17<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">returnValueName<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">7<\/span> <span class=\"m\">10<\/span>\r\n<\/code><\/pre>\n<h2>\u5909\u6570<\/h2>\n<ul class=\"post-ul\">\u5909\u6570\u306e\u5ba3\u8a00<\/ul>\n<p>\u300cvar\u300d\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u5909\u6570\u306e\u5ba3\u8a00\u3092\u884c\u3046\u3002<br \/>\n\u30d1\u30c3\u30b1\u30fc\u30b8\u3001\u307e\u305f\u306f\u3001\u95a2\u6570\u3067\u5229\u7528\u3067\u304d\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"c\">\/\/\u30b0\u30ed\u30fc\u30d0\u30eb\u306b\u5ba3\u8a00 \u203bbool\u304c\u578b<\/span>\r\n<span class=\"k\">var<\/span> <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span> <span class=\"kt\">bool<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">i<\/span> <span class=\"kt\">int<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"k\">var<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">0<\/span> <span class=\"no\">false<\/span> <span class=\"no\">false<\/span> <span class=\"no\">false<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u5909\u6570\u306b\u521d\u671f\u5024\u3092\u4e0e\u3048\u308b<\/ul>\n<p>\u521d\u671f\u5024\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u578b\u3092\u7701\u7565\u3067\u304d\u308b\u3002<br \/>\n\u305d\u306e\u5909\u6570\u306f\u521d\u671f\u5024\u304c\u6301\u3064\u578b\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u203b\u4f8b: \u6570\u5b57-&gt;int , \u6587\u5b57\u5217-&gt;string\u306a\u3069<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">var<\/span> <span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">j<\/span> <span class=\"kt\">int<\/span> <span class=\"o\">=<\/span> <span class=\"m\">1<\/span><span class=\"p\">,<\/span> <span class=\"m\">2<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c\">\/\/c-&gt;bool ,python-&gt;bool ,java-&gt;string<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span> <span class=\"o\">=<\/span> <span class=\"no\">true<\/span><span class=\"p\">,<\/span> <span class=\"no\">false<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"no!\"<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">j<\/span><span class=\"p\">,<\/span> <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">giveVarInitialValue<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">1<\/span> <span class=\"m\">2<\/span> <span class=\"no\">true<\/span> <span class=\"no\">false<\/span> <span class=\"n\">no<\/span><span class=\"o\">!<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u5909\u6570\u306e\u5ba3\u8a00\u3092\u7701\u7565<\/ul>\n<p>\u95a2\u6570\u306e\u4e2d\u3067\u306f\u3001 var \u5ba3\u8a00\u306e\u4ee3\u308f\u308a\u306b\u3001\u77ed\u3044 := \u306e\u4ee3\u5165\u6587\u3092\u4f7f\u3044\u3001<br \/>\n\u6697\u9ed9\u7684\u306a\u578b\u5ba3\u8a00\u304c\u3067\u304d\u308b\u3002<\/p>\n<h3>\u203b\u95a2\u6570\u306e\u5916\u3067\u306f\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u306f\u3058\u307e\u308b\u5ba3\u8a00( var, func, \u306a\u3069)\u304c\u5fc5\u8981\u3067\u3001 := \u3067\u306e\u6697\u9ed9\u7684\u306a\u5ba3\u8a00\u306f\u5229\u7528\u3067\u304d\u306a\u3044\u3002<\/h3>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">j<\/span> <span class=\"kt\">int<\/span> <span class=\"o\">=<\/span> <span class=\"m\">1<\/span><span class=\"p\">,<\/span> <span class=\"m\">2<\/span>\r\n    <span class=\"c\">\/\/\u6697\u9ed9\u7684\u5ba3\u8a00<\/span>\r\n    <span class=\"n\">k<\/span> <span class=\"o\">:=<\/span> <span class=\"m\">3<\/span>\r\n    <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span> <span class=\"o\">:=<\/span> <span class=\"no\">true<\/span><span class=\"p\">,<\/span> <span class=\"no\">false<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"no!\"<\/span>\r\n\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">j<\/span><span class=\"p\">,<\/span> <span class=\"n\">k<\/span><span class=\"p\">,<\/span> <span class=\"n\">c<\/span><span class=\"p\">,<\/span> <span class=\"n\">python<\/span><span class=\"p\">,<\/span> <span class=\"n\">java<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">varDeclarationOmitted<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">1<\/span> <span class=\"m\">2<\/span> <span class=\"m\">3<\/span> <span class=\"no\">true<\/span> <span class=\"no\">false<\/span> <span class=\"n\">no<\/span><span class=\"o\">!<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u57fa\u672c\u306e\u578b<\/ul>\n<p>\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">\/\/\u578b\u306e\u7d39\u4ecb\u306e\u307f<\/span>\r\n\r\n<span class=\"kt\">bool<\/span>\r\n\r\n<span class=\"kt\">string<\/span>\r\n\r\n<span class=\"kt\">int<\/span>  <span class=\"kt\">int8<\/span>  <span class=\"kt\">int16<\/span>  <span class=\"kt\">int32<\/span>  <span class=\"kt\">int64<\/span>\r\n<span class=\"kt\">uint<\/span> <span class=\"kt\">uint8<\/span> <span class=\"kt\">uint16<\/span> <span class=\"kt\">uint32<\/span> <span class=\"kt\">uint64<\/span> <span class=\"kt\">uintptr<\/span>\r\n\r\n<span class=\"kt\">byte<\/span> <span class=\"c\">\/\/ uint8 \u306e\u5225\u540d<\/span>\r\n\r\n<span class=\"kt\">rune<\/span> <span class=\"c\">\/\/ int32 \u306e\u5225\u540d<\/span>\r\n     <span class=\"c\">\/\/ Unicode \u306e\u30b3\u30fc\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u8868\u3059<\/span>\r\n\r\n<span class=\"kt\">float32<\/span> <span class=\"kt\">float64<\/span>\r\n\r\n<span class=\"kt\">complex64<\/span> <span class=\"kt\">complex128<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u5909\u6570\u306b\u521d\u671f\u5024\u3092\u4e0e\u3048\u305a\u306b\u5ba3\u8a00<\/ul>\n<p>\u305d\u306e\u5834\u5408\u3001\u30bc\u30ed\u5024\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u30bc\u30ed\u5024\u306f\u578b\u306b\u3088\u3063\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4e0e\u3048\u3089\u308c\u308b\u3002<\/p>\n<p>\u6570\u5024\u578b(int,float\u306a\u3069): 0<br \/>\nbool\u578b: false<br \/>\nstring\u578b: &#8220;&#8221; (\u7a7a\u6587\u5b57\u5217( empty string ))<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">i<\/span> <span class=\"kt\">int<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">f<\/span> <span class=\"kt\">float64<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">b<\/span> <span class=\"kt\">bool<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">s<\/span> <span class=\"kt\">string<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"%v %v %v %q<\/span><span class=\"se\">\\n<\/span><span class=\"s\">\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">i<\/span><span class=\"p\">,<\/span> <span class=\"n\">f<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">,<\/span> <span class=\"n\">s<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"k\">go<\/span><span class=\"o\">:<\/span><span class=\"n\">varNoInitialVal<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">0<\/span> <span class=\"m\">0<\/span> <span class=\"no\">false<\/span> <span class=\"s\">\"\"<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u578b\u5909\u63db<\/ul>\n<p>\u5c11\u6570\u70b9\u2192\u6574\u6570\u306e\u5909\u63db\u306b\u3064\u3044\u3066<br \/>\n\u203b\u6570\u5024\u304b\u3089\u6587\u5b57\u5217\u3078\u306e\u5909\u63db\u306b\u95a2\u3057\u3066\u306f\u3001\u307e\u305f\u5225\u51e6\u7406\u304c\u5fc5\u8981\u3002\u3002<br \/>\ngolang\u3000\u6587\u5b57\u5217\u2192\u6570\u5024\u3001\u6570\u5024\u2192\u6587\u5b57\u5217\u5909\u63db<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"math\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span> <span class=\"kt\">int<\/span> <span class=\"o\">=<\/span> <span class=\"m\">3<\/span><span class=\"p\">,<\/span> <span class=\"m\">4<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">f<\/span> <span class=\"kt\">float64<\/span> <span class=\"o\">=<\/span> <span class=\"n\">math<\/span><span class=\"o\">.<\/span><span class=\"n\">Sqrt<\/span><span class=\"p\">(<\/span><span class=\"kt\">float64<\/span><span class=\"p\">(<\/span><span class=\"n\">x<\/span><span class=\"o\">*<\/span><span class=\"n\">x<\/span> <span class=\"o\">+<\/span> <span class=\"n\">y<\/span><span class=\"o\">*<\/span><span class=\"n\">y<\/span><span class=\"p\">))<\/span>\r\n        <span class=\"k\">var<\/span> <span class=\"n\">z<\/span> <span class=\"kt\">uint<\/span> <span class=\"o\">=<\/span> <span class=\"kt\">uint<\/span><span class=\"p\">(<\/span><span class=\"n\">f<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span><span class=\"p\">,<\/span> <span class=\"n\">z<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">typeConv<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"m\">3<\/span> <span class=\"m\">4<\/span> <span class=\"m\">5<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u578b\u63a8\u8ad6<\/ul>\n<p>\u660e\u793a\u7684\u306a\u578b\u3092\u6307\u5b9a\u305b\u305a\u306b\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u5834\u5408( := \u3084 var = \u306e\u3044\u305a\u308c\u304b)\u3001<br \/>\n\u5909\u6570\u306e\u578b\u306f\u53f3\u5074\u306e\u5909\u6570\u304b\u3089\u578b\u63a8\u8ad6\u3055\u308c\u308b\u3002<br \/>\n\u203b\u53f3\u5074\u306e\u5909\u6570\u304c\u578b\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u5de6\u5074\u306e\u65b0\u3057\u3044\u5909\u6570\u306f\u540c\u3058\u578b\u306b\u306a\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"c\">\/\/ i \u306fint\u578b\u306e\u305f\u3081\u3001v\u3082int\u578b\u306b\u306a\u308b\u3002<\/span>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">var<\/span> <span class=\"n\">i<\/span> <span class=\"kt\">int<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">v<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">i<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"v is of type %T<\/span><span class=\"se\">\\n<\/span><span class=\"s\">\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">v<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">typeInference<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"n\">v<\/span> <span class=\"n\">is<\/span> <span class=\"n\">of<\/span> <span class=\"k\">type<\/span> <span class=\"kt\">int<\/span>\r\n<\/code><\/pre>\n<h2>\u5b9a\u6570<\/h2>\n<p>\u5b9a\u6570\u306f\u3001 const\u3092\u4f7f\u3063\u3066\u5909\u6570\u3068\u540c\u3058\u3088\u3046\u306b\u5ba3\u8a00\u3059\u308b\u3002<br \/>\n\u5b9a\u6570\u306f\u3001\u6587\u5b57(character)\u3001\u6587\u5b57\u5217(string)\u3001boolean\u3001\u6570\u5024(numeric)\u306e\u307f\u3067\u4f7f\u3048\u308b\u3002<br \/>\n\u203b\u5b9a\u6570\u306f := \u3092\u4f7f\u3063\u3066\u5ba3\u8a00\u3067\u304d\u306a\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">const<\/span> <span class=\"n\">Pi<\/span> <span class=\"o\">=<\/span> <span class=\"m\">3.14<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">const<\/span> <span class=\"n\">World<\/span> <span class=\"kt\">string<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u4e16\u754c\"<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">World<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Happy\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">Pi<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"Day\"<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"k\">const<\/span> <span class=\"n\">Truth<\/span> <span class=\"o\">=<\/span> <span class=\"no\">true<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Go rules?\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">Truth<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c<\/span>\r\n<span class=\"k\">go<\/span> <span class=\"n\">run<\/span> <span class=\"n\">constant<\/span><span class=\"o\">.<\/span><span class=\"k\">go<\/span>\r\n\r\n<span class=\"c\">\/\/\u5b9f\u884c\u7d50\u679c<\/span>\r\n<span class=\"n\">Hello<\/span> <span class=\"n\">\u4e16\u754c<\/span>\r\n<span class=\"n\">Happy<\/span> <span class=\"m\">3.14<\/span> <span class=\"n\">Day<\/span>\r\n<span class=\"n\">Go<\/span> <span class=\"n\">rules<\/span><span class=\"err\">?<\/span> <span class=\"no\">true<\/span>\r\n<\/code><\/pre>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u57fa\u672c\u7684\u306a\u3068\u3053\u308d\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u305f\u3002<br \/>\n\u6b21\u56de\u306f\u3001\u300cFor\u300d\u3084\u300cif\u300d\u3068\u3044\u3063\u305f\u3068\u3053\u308d\u3092\u307f\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u300c\u51e6\u7406\u304c\u901f\u3044\u300d\u300c\u4e26\u884c\u51e6\u7406\u300d\u304c\u5f97\u610f\u3068\u3044\u3046\u3053\u3068\u304b\u3089\u3001 \u4eca\u5f8c\u5927\u898f\u6a21web\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3067\u91cd\u5b9d\u3055\u308c\u308b\u3068\u601d\u3044\u307e\u3057\u305f\u306e [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44831","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u6982\u8981 \u300c\u51e6\u7406\u304c\u901f\u3044\u300d\u300c\u4e26\u884c\u51e6\u7406\u300d\u304c\u5f97\u610f\u3068\u3044\u3046\u3053\u3068\u304b\u3089\u3001 \u4eca\u5f8c\u5927\u898f\u6a21web\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3067\u91cd\u5b9d\u3055\u308c\u308b\u3068\u601d\u3044\u307e\u3057\u305f\u306e [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-01-31T11:37:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-28T15:38:50+00:00\" \/>\n<meta name=\"author\" content=\"\u9038, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u9038, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/44831-2\/\",\"name\":\"- Blog - Silicon 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