{"id":57890,"date":"2024-10-10T22:00:20","date_gmt":"2024-10-10T14:00:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57890\/"},"modified":"2024-10-10T22:00:20","modified_gmt":"2024-10-10T14:00:20","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e6%b5%ae%e9%bb%9e%e9%a1%9e%e5%9e%8b%ef%bc%88%e5%b0%8f%e6%95%b8%e9%a1%9e%e5%9e%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57890\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u6d6e\u9ede\u985e\u578b\uff08\u5c0f\u6578\u985e\u578b\uff09"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e6%b5%ae%e9%bb%9e%e9%a1%9e%e5%9e%8b%ef%bc%88%e5%b0%8f%e6%95%b8%e9%a1%9e%e5%9e%8b%ef%bc%89-xCiRnnCxzv\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u6d6e\u9ede\u985e\u578b\uff08\u5c0f\u6578\u985e\u578b\uff09<\/h1>\n<p>\u5728\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c\u6d6e\u9ede\u6578\u662f\u4e00\u7a2e\u7528\u4f86\u8868\u793a\u5c0f\u6578\u7684\u6578\u64da\u985e\u578b\u3002Go \u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u73fe\u4ee3\u5316\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5176\u4e2d\u6d6e\u9ede\u6578\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Go \u8a9e\u8a00\u4e2d\u7684\u6d6e\u9ede\u985e\u578b\uff0c\u5305\u62ec\u5176\u7279\u6027\u3001\u4f7f\u7528\u65b9\u6cd5\u53ca\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"go-%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84%e6%b5%ae%e9%bb%9e%e9%a1%9e%e5%9e%8b-xCiRnnCxzv\">Go \u8a9e\u8a00\u4e2d\u7684\u6d6e\u9ede\u985e\u578b<\/h2>\n<p>Go \u8a9e\u8a00\u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u6d6e\u9ede\u6578\u985e\u578b\uff1a<code>float32<\/code> \u548c <code>float64<\/code>\u3002\u9019\u5169\u7a2e\u985e\u578b\u7684\u4e3b\u8981\u5340\u5225\u5728\u65bc\u5b83\u5011\u7684\u7cbe\u5ea6\u548c\u7bc4\u570d\u3002<\/p>\n<ul>\n<li><code>float32<\/code>: \u9019\u662f\u4e00\u7a2e\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 4 \u500b\u5b57\u7bc0\uff0c\u80fd\u5920\u8868\u793a\u7684\u6578\u503c\u7bc4\u570d\u5927\u7d04\u662f <code>\u00b11.5 \u00d7 10^\u221245<\/code> \u5230 <code>\u00b13.4 \u00d7 10^38<\/code>\uff0c\u7cbe\u5ea6\u7d04\u70ba 7 \u4f4d\u5341\u9032\u5236\u6578\u5b57\u3002<\/li>\n<li><code>float64<\/code>: \u9019\u662f\u4e00\u7a2e\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 8 \u500b\u5b57\u7bc0\uff0c\u80fd\u5920\u8868\u793a\u7684\u6578\u503c\u7bc4\u570d\u5927\u7d04\u662f <code>\u00b15.0 \u00d7 10^\u2212324<\/code> \u5230 <code>\u00b11.7 \u00d7 10^308<\/code>\uff0c\u7cbe\u5ea6\u7d04\u70ba 15 \u4f4d\u5341\u9032\u5236\u6578\u5b57\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b5%ae%e9%bb%9e%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8-xCiRnnCxzv\">\u6d6e\u9ede\u6578\u7684\u4f7f\u7528<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u6d6e\u9ede\u6578\u7684\u4f7f\u7528\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e8%81%b2%e6%98%8e%e6%b5%ae%e9%bb%9e%e6%95%b8%e8%ae%8a%e9%87%8f-xCiRnnCxzv\">\u8072\u660e\u6d6e\u9ede\u6578\u8b8a\u91cf<\/h3>\n<pre><code>package main\n\nimport \"fmt\"\n\nfunc main() {\n    var a float32 = 3.14\n    var b float64 = 2.718281828459\n    fmt.Println(\"a:\", a)\n    fmt.Println(\"b:\", b)\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u8072\u660e\u4e86\u5169\u500b\u6d6e\u9ede\u6578\u8b8a\u91cf <code>a<\/code> \u548c <code>b<\/code>\uff0c\u5206\u5225\u4f7f\u7528 <code>float32<\/code> \u548c <code>float64<\/code> \u985e\u578b\u3002<\/p>\n<h3 id=\"%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%81%8b%e7%ae%97-xCiRnnCxzv\">\u6d6e\u9ede\u6578\u904b\u7b97<\/h3>\n<p>Go \u8a9e\u8a00\u652f\u6301\u57fa\u672c\u7684\u6578\u5b78\u904b\u7b97\uff0c\u5305\u62ec\u52a0\u6cd5\u3001\u6e1b\u6cd5\u3001\u4e58\u6cd5\u548c\u9664\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u904b\u7b97\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport \"fmt\"\n\nfunc main() {\n    var x float64 = 10.5\n    var y float64 = 2.5\n\n    sum := x + y\n    difference := x - y\n    product := x * y\n    quotient := x \/ y\n\n    fmt.Println(\"Sum:\", sum)\n    fmt.Println(\"Difference:\", difference)\n    fmt.Println(\"Product:\", product)\n    fmt.Println(\"Quotient:\", quotient)\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b5%ae%e9%bb%9e%e6%95%b8%e7%9a%84%e7%b2%be%e5%ba%a6%e5%95%8f%e9%a1%8c-xCiRnnCxzv\">\u6d6e\u9ede\u6578\u7684\u7cbe\u5ea6\u554f\u984c<\/h2>\n<p>\u6d6e\u9ede\u6578\u5728\u8a08\u7b97\u904e\u7a0b\u4e2d\u53ef\u80fd\u6703\u51fa\u73fe\u7cbe\u5ea6\u554f\u984c\uff0c\u9019\u662f\u7531\u65bc\u5176\u5167\u90e8\u8868\u793a\u65b9\u5f0f\u6240\u81f4\u3002\u7279\u5225\u662f\u5728\u9032\u884c\u591a\u6b21\u904b\u7b97\u6642\uff0c\u8aa4\u5dee\u53ef\u80fd\u6703\u7d2f\u7a4d\u3002\u56e0\u6b64\uff0c\u5728\u8655\u7406\u91d1\u9322\u6216\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u8a08\u7b97\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u6574\u6578\u6216\u5176\u4ed6\u6578\u64da\u985e\u578b\u4f86\u907f\u514d\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%b5%ae%e9%bb%9e%e6%95%b8%e7%b2%be%e5%ba%a6%e5%95%8f%e9%a1%8c-xCiRnnCxzv\">\u793a\u4f8b\uff1a\u6d6e\u9ede\u6578\u7cbe\u5ea6\u554f\u984c<\/h3>\n<pre><code>package main\n\nimport \"fmt\"\n\nfunc main() {\n    var a float64 = 0.1\n    var b float64 = 0.2\n    var c float64 = a + b\n\n    fmt.Println(\"0.1 + 0.2 =\", c)\n    fmt.Println(\"0.1 + 0.2 == 0.3:\", c == 0.3)\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u96d6\u7136\u6211\u5011\u671f\u671b <code>0.1 + 0.2<\/code> \u7b49\u65bc <code>0.3<\/code>\uff0c\u4f46\u5be6\u969b\u4e0a\uff0c\u7531\u65bc\u6d6e\u9ede\u6578\u7684\u8868\u793a\u8aa4\u5dee\uff0c\u9019\u500b\u6bd4\u8f03\u53ef\u80fd\u6703\u8fd4\u56de <code>false<\/code>\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-xCiRnnCxzv\">\u7d50\u8ad6<\/h2>\n<p>Go \u8a9e\u8a00\u7684\u6d6e\u9ede\u985e\u578b\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u8868\u793a\u65b9\u5f0f\uff0c\u9069\u5408\u7528\u65bc\u5404\u7a2e\u8a08\u7b97\u9700\u6c42\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528\u6d6e\u9ede\u6578\u6642\u9700\u8b39\u614e\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u60c5\u6cc1\u4e0b\u3002\u4e86\u89e3\u6d6e\u9ede\u6578\u7684\u7279\u6027\u53ca\u5176\u6f5b\u5728\u554f\u984c\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u7a0b\u5f0f\u7684\u7a69\u5b9a\u6027\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3 Go \u8a9e\u8a00\u6216\u5176\u4ed6\u6280\u8853\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e\u8cc7\u6e90\u548c\u670d\u52d9\uff0c\u5305\u62ec <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Go \u8a9e\u8a00\u4e2d\u7684\u6d6e\u9ede\u985e\u578b\uff0c\u4e86\u89e3\u5176\u7279\u6027\u3001\u7528\u6cd5\u53ca\u61c9\u7528\u7bc4\u4f8b\uff0c\u8f15\u9b06\u638c\u63e1\u5c0f\u6578\u8655\u7406\u6280\u5de7\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-57890","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57890","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=57890"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57890\/revisions"}],"predecessor-version":[{"id":57891,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57890\/revisions\/57891"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}