{"id":44114,"date":"2023-06-08T09:47:42","date_gmt":"2023-06-24T08:01:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8go%e8%af%ad%e8%a8%80%e5%ae%9e%e7%8e%b0%e7%9c%81%e7%95%a5%e5%8f%b7-golang-de-ellipsis\/"},"modified":"2024-04-30T07:51:53","modified_gmt":"2024-04-29T23:51:53","slug":"%e7%94%a8go%e8%af%ad%e8%a8%80%e5%ae%9e%e7%8e%b0%e7%9c%81%e7%95%a5%e5%8f%b7-golang-de-ellipsis","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8go%e8%af%ad%e8%a8%80%e5%ae%9e%e7%8e%b0%e7%9c%81%e7%95%a5%e5%8f%b7-golang-de-ellipsis\/","title":{"rendered":"\u7528Go\u8bed\u8a00\u5b9e\u73b0\u7701\u7565\u53f7 (golang de ellipsis)"},"content":{"rendered":"<p>\u5c1d\u8bd5\u5728Go\u4e2d\u8fdb\u884c\u5b57\u7b26\u7684\u7701\u7565\u5904\u7406\u65f6\uff0c\u7531\u4e8e\u9047\u5230\u4e86\u57fa\u7840\u7684\u95ee\u9898\uff0c\u6211\u53ea\u662f\u7b80\u5355\u8bb0\u5f55\u4e00\u4e0b\u3002<\/p>\n<h1>\u7ed3\u8bba<\/h1>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"c\">\/\/ Ellipsis a text<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">Ellipsis<\/span><span class=\"p\">(<\/span><span class=\"n\">length<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">text<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"kt\">string<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">r<\/span> <span class=\"o\">:=<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">rune<\/span><span class=\"p\">(<\/span><span class=\"n\">text<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"n\">r<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span> <span class=\"n\">length<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"kt\">string<\/span><span class=\"p\">(<\/span><span class=\"n\">r<\/span><span class=\"p\">[<\/span><span class=\"m\">0<\/span><span class=\"o\">:<\/span><span class=\"n\">length<\/span><span class=\"p\">])<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"...\"<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">text<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u9700\u8981\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\uff1a<br \/>\n1. \u8bf7\u7ed9\u6211\u4e00\u676f\u5496\u5561\u3002<br \/>\n2. \u8bf7\u5e2e\u6211\u9884\u8ba2\u4e00\u5f20\u4eca\u665a\u7684\u7535\u5f71\u7968\u3002<br \/>\n3. \u8bf7\u544a\u8bc9\u6211\u6700\u8fd1\u7684\u5730\u94c1\u7ad9\u5728\u54ea\u91cc\u3002<br \/>\n4. \u6211\u60f3\u4e70\u4e00\u672c\u4e2d\u6587\u6559\u6750\u3002<br \/>\n5. \u9ebb\u70e6\u5e2e\u6211\u6253\u4e2a\u7535\u8bdd\u7ed9\u6211\u7684\u670b\u53cb\u3002<\/h1>\n<p>len(string)\u306f\u9b3c\u9580<\/p>\n<p>\u30d0\u30a4\u30c8\u6570\u8fd4\u3059\u3002\u8003\u3048\u3066\u307f\u305f\u3089\u5f53\u7136\u3060\u3088\u306d\u2606<\/p>\n<p>string[n:m]\u306f\u9b3c\u9580<\/p>\n<p>\u30d0\u30a4\u30c8\u4f4d\u7f6e\u3067\u5207\u308b\u3002\u8003\u3048\u3066\u307f\u305f\u3089\u5f53\uff5a<\/p>\n<h1>\u591a\u4f59<\/h1>\n<p>\u5728\u521b\u5efa\u4e00\u4e2a\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u51fd\u6570\u65f6\uff0c\u5982\u679c\u4f7f\u7528func(params&#8230;, string)\u7684\u683c\u5f0f\uff0c\u4f1a\u7a0d\u5fae\u65b9\u4fbf\u4e00\u4e9b\u3002<\/p>\n<p>\u53ef\u4ee5\u76f4\u63a5\u5c06\u5176\u653e\u5165text\/template\u7684FuncMap\u4e2d\u3002\u8fd8\u771f\u662f\u5c0f\u4e8b\u4e00\u6869\uff01<\/p>\n<pre class=\"post-pre\"><code><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\">\"bytes\"<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"text\/template\"<\/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\">buf<\/span> <span class=\"n\">bytes<\/span><span class=\"o\">.<\/span><span class=\"n\">Buffer<\/span>\r\n    <span class=\"n\">template<\/span><span class=\"o\">.<\/span><span class=\"n\">New<\/span><span class=\"p\">(<\/span><span class=\"s\">\"text\"<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span>\r\n        <span class=\"n\">Funcs<\/span><span class=\"p\">(<\/span><span class=\"n\">template<\/span><span class=\"o\">.<\/span><span class=\"n\">FuncMap<\/span><span class=\"p\">{<\/span><span class=\"s\">\"ellipsis\"<\/span><span class=\"o\">:<\/span> <span class=\"n\">Ellipse<\/span><span class=\"p\">})<\/span><span class=\"o\">.<\/span>\r\n        <span class=\"n\">Parse<\/span><span class=\"p\">(<\/span><span class=\"s\">`{{.value | ellipsis 5}}`<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span>\r\n        <span class=\"n\">Execute<\/span><span class=\"p\">(<\/span><span class=\"n\">buf<\/span><span class=\"p\">,<\/span> <span class=\"k\">map<\/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=\"s\">\"value\"<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"\u307f\u3093\u307f\u3093\u307f\u3089\u304f\u308b\u2606\"<\/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\">buf<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">())<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5c1d\u8bd5\u5728Go\u4e2d\u8fdb\u884c\u5b57\u7b26\u7684\u7701\u7565\u5904\u7406\u65f6\uff0c\u7531\u4e8e\u9047\u5230\u4e86\u57fa\u7840\u7684\u95ee\u9898\uff0c\u6211\u53ea\u662f\u7b80\u5355\u8bb0\u5f55\u4e00\u4e0b\u3002 \u7ed3\u8bba package main  [&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-44114","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>\u7528Go\u8bed\u8a00\u5b9e\u73b0\u7701\u7565\u53f7 (golang de ellipsis) - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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