{"id":57730,"date":"2024-10-10T20:41:27","date_gmt":"2024-10-10T12:41:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57730\/"},"modified":"2024-10-10T20:41:27","modified_gmt":"2024-10-10T12:41:27","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%b8%b8%e9%87%8f%e5%92%8c-const-%e9%97%9c%e9%8d%b5%e5%ad%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57730\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u5e38\u91cf\u548c const \u95dc\u9375\u5b57"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%b8%b8%e9%87%8f%e5%92%8c-const-%e9%97%9c%e9%8d%b5%e5%ad%97-uSLawfDGAA\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u5e38\u91cf\u548c const \u95dc\u9375\u5b57<\/h1>\n<p>\u5728\u5b78\u7fd2 Go \u8a9e\u8a00\u7684\u904e\u7a0b\u4e2d\uff0c\u7406\u89e3\u5e38\u91cf\u548c <code>const<\/code> \u95dc\u9375\u5b57\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e38\u91cf\u662f\u6307\u5728\u7a0b\u5e8f\u57f7\u884c\u904e\u7a0b\u4e2d\u5176\u503c\u4e0d\u6703\u6539\u8b8a\u7684\u8b8a\u91cf\u3002\u9019\u4f7f\u5f97\u5e38\u91cf\u5728\u7de8\u7a0b\u4e2d\u5177\u6709\u91cd\u8981\u7684\u61c9\u7528\u50f9\u503c\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u56fa\u5b9a\u503c\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%b8%b8%e9%87%8f%ef%bc%9f-uSLawfDGAA\">\u4ec0\u9ebc\u662f\u5e38\u91cf\uff1f<\/h2>\n<p>\u5e38\u91cf\u662f\u6307\u5728\u7a0b\u5e8f\u904b\u884c\u671f\u9593\u4e0d\u6703\u6539\u8b8a\u7684\u503c\u3002Go \u8a9e\u8a00\u4e2d\u7684\u5e38\u91cf\u53ef\u4ee5\u662f\u6578\u5b57\u3001\u5e03\u6797\u503c\u6216\u5b57\u4e32\u3002\u5e38\u91cf\u7684\u5b9a\u7fa9\u4f7f\u7528 <code>const<\/code> \u95dc\u9375\u5b57\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u5168\u5c40\u6216\u5c40\u90e8\u7bc4\u570d\u5167\u5b9a\u7fa9\u3002<\/p>\n<h2>\u4f7f\u7528 <code>const<\/code> \u95dc\u9375\u5b57<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u4f7f\u7528 <code>const<\/code> \u95dc\u9375\u5b57\u4f86\u5b9a\u7fa9\u5e38\u91cf\u3002\u4ee5\u4e0b\u662f\u5b9a\u7fa9\u5e38\u91cf\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>const \u5e38\u91cf\u540d\u7a31 \u5e38\u91cf\u985e\u578b = \u5e38\u91cf\u503c<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5b9a\u7fa9\u4e00\u500b\u6574\u6578\u5e38\u91cf\uff1a<\/p>\n<pre><code>const Pi float64 = 3.14<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>Pi<\/code> \u662f\u4e00\u500b\u5e38\u91cf\uff0c\u5176\u985e\u578b\u70ba <code>float64<\/code>\uff0c\u503c\u70ba 3.14\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e9%87%8f%e7%9a%84%e7%89%b9%e6%80%a7-uSLawfDGAA\">\u5e38\u91cf\u7684\u7279\u6027<\/h2>\n<ul>\n<li><strong>\u4e0d\u53ef\u8b8a\u6027\uff1a<\/strong>\u5e38\u91cf\u4e00\u65e6\u5b9a\u7fa9\uff0c\u5176\u503c\u4e0d\u80fd\u88ab\u6539\u8b8a\u3002<\/li>\n<li><strong>\u985e\u578b\u63a8\u65b7\uff1a<\/strong>\u5982\u679c\u6c92\u6709\u660e\u78ba\u6307\u5b9a\u985e\u578b\uff0cGo \u8a9e\u8a00\u6703\u6839\u64da\u5e38\u91cf\u7684\u503c\u81ea\u52d5\u63a8\u65b7\u985e\u578b\u3002<\/li>\n<li><strong>\u53ef\u7528\u65bc\u904b\u7b97\uff1a<\/strong>\u5e38\u91cf\u53ef\u4ee5\u53c3\u8207\u904b\u7b97\uff0c\u4e26\u4e14\u53ef\u4ee5\u7528\u65bc\u5176\u4ed6\u5e38\u91cf\u7684\u5b9a\u7fa9\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b8%b8%e9%87%8f%e7%9a%84%e7%af%84%e4%be%8b-uSLawfDGAA\">\u5e38\u91cf\u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u5e38\u91cf\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport \"fmt\"\n\nconst (\n    Pi       = 3.14\n    Radius   = 5\n    Diameter = 2 * Radius\n)\n\nfunc main() {\n    area := Pi * float64(Radius) * float64(Radius)\n    fmt.Println(\"\u5713\u7684\u9762\u7a4d\u70ba:\", area)\n    fmt.Println(\"\u5713\u7684\u76f4\u5f91\u70ba:\", Diameter)\n}<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e09\u500b\u5e38\u91cf\uff1a<code>Pi<\/code>\u3001<code>Radius<\/code> \u548c <code>Diameter<\/code>\u3002\u7136\u5f8c\u8a08\u7b97\u5713\u7684\u9762\u7a4d\u4e26\u8f38\u51fa\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e5%80%8b%e5%b8%b8%e9%87%8f%e7%9a%84%e5%ae%9a%e7%be%a9-uSLawfDGAA\">\u591a\u500b\u5e38\u91cf\u7684\u5b9a\u7fa9<\/h2>\n<p>Go \u8a9e\u8a00\u5141\u8a31\u4f7f\u7528\u62ec\u865f\u4f86\u5b9a\u7fa9\u591a\u500b\u5e38\u91cf\uff0c\u9019\u6a23\u53ef\u4ee5\u4f7f\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>const (\n    A = 1\n    B\n    C = \"hello\"\n    D\n)<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>B<\/code> \u7684\u503c\u6703\u81ea\u52d5\u63a8\u65b7\u70ba 2\uff0c\u800c <code>D<\/code> \u7684\u503c\u6703\u81ea\u52d5\u63a8\u65b7\u70ba &#8220;hello&#8221;\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-uSLawfDGAA\">\u7d50\u8ad6<\/h2>\n<p>\u5e38\u91cf\u5728 Go \u8a9e\u8a00\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u4e0d\u8b8a\u7684\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528 <code>const<\/code> \u95dc\u9375\u5b57\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6e05\u6670\u5730\u5b9a\u7fa9\u548c\u4f7f\u7528\u5e38\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 Go \u8a9e\u8a00\u4e2d\u7684\u5e38\u91cf\u53ca const \u95dc\u9375\u5b57\uff0c\u638c\u63e1\u5982\u4f55\u5b9a\u7fa9\u548c\u4f7f\u7528\u5e38\u91cf\u4ee5\u63d0\u5347\u7a0b\u5f0f\u78bc\u7684\u53ef\u8b80\u6027\u548c\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57730","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=57730"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57730\/revisions"}],"predecessor-version":[{"id":57731,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57730\/revisions\/57731"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}