{"id":1166,"date":"2023-10-10T22:13:00","date_gmt":"2023-10-10T14:13:00","guid":{"rendered":"https:\/\/www.dataz8.com\/?p=1166"},"modified":"2023-11-10T13:38:03","modified_gmt":"2023-11-10T05:38:03","slug":"go%e4%b9%8b%e6%95%b0%e5%ad%97","status":"publish","type":"post","link":"https:\/\/www.dataz8.com\/?p=1166","title":{"rendered":"Go\u4e4b\u6570\u5b57"},"content":{"rendered":"<div class=\"pps-series-post-details pps-series-post-details-variant-classic pps-series-post-details-1788\" data-series-id=\"21\"><div class=\"pps-series-meta-content\"><div class=\"pps-series-meta-text\">This entry is \u7b2c 3 \u90e8\u5206\uff0c\u5171 3 in the series <a href=\"https:\/\/www.dataz8.com\/?series=go%e8%af%ad%e8%a8%80%e5%ad%a6%e4%b9%a0%e4%b9%8b%e8%b7%af\">Go(Golang)\u5b66\u4e60\u4e4b\u8def<\/a><\/div><\/div><\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#1_%E6%95%B0%E5%AD%97%E7%B1%BB%E5%9E%8B\" >1. \u6570\u5b57\u7c7b\u578b<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#11_Golang%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E4%BB%8B%E7%BB%8D\" >1.1 Golang\u6570\u636e\u7c7b\u578b\u4ecb\u7ecd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#12_%E6%95%B4%E6%95%B0%E5%88%86%E4%B8%BA%E4%B8%A4%E5%A4%A7%E7%B1%BB\" >1.2 \u6574\u6570\u5206\u4e3a\u4e24\u5927\u7c7b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#2_%E6%95%B0%E5%AD%97%E5%AE%9A%E4%B9%89\" >2. \u6570\u5b57\u5b9a\u4e49<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#21_%E5%AE%9A%E4%B9%89%E6%95%B0%E5%AD%97%E7%B1%BB%E5%9E%8B\" >2.1 \u5b9a\u4e49\u6570\u5b57\u7c7b\u578b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#22_reflectTypeOf%E6%9F%A5%E7%9C%8B%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B\" >2.2 reflect.TypeOf\u67e5\u770b\u6570\u636e\u7c7b\u578b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.dataz8.com\/?p=1166\/#3_%E5%B8%83%E5%B0%94%E5%80%BC\" >3. \u5e03\u5c14\u503c<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E6%95%B0%E5%AD%97%E7%B1%BB%E5%9E%8B\"><\/span>1. \u6570\u5b57\u7c7b\u578b<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"11_Golang%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E4%BB%8B%E7%BB%8D\"><\/span>1.1 Golang\u6570\u636e\u7c7b\u578b\u4ecb\u7ecd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Go\u8bed\u8a00\u6570\u636e\u7c7b\u578b\u5206\u4e3a\uff1a\u57fa\u672c\u6570\u636e\u7c7b\u578b\u548c\u590d\u5408\u6570\u636e\u7c7b\u578b<\/li>\n\n\n\n<li>\u57fa\u672c\u6570\u636e\u7c7b\u578b\u6709\uff1a\u6574\u6570\u3001\u6d6e\u70b9\u578b\u3001\u5e03\u5c14\u578b\u3001\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>\u590d\u5408\u6570\u636e\u7c7b\u578b\u6709\uff1a\u6570\u7ec4\u3001\u5207\u7247\u3001\u7ed3\u6784\u4f53\u3001\u51fd\u6570\u3001map\u3001\u901a\u9053(channel)\u3001\u63a5\u53e3<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"12_%E6%95%B4%E6%95%B0%E5%88%86%E4%B8%BA%E4%B8%A4%E5%A4%A7%E7%B1%BB\"><\/span>1.2 \u6574\u6570\u5206\u4e3a\u4e24\u5927\u7c7b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6709\u7b26\u53f7\u6574\u578b\u6309\u957f\u5ea6\u5206\u4e3a\uff1aint8\u3001int16\u3001int32\u3001int64<\/li>\n\n\n\n<li>\u5bf9\u5e94\u7684\u65e0\u7b26\u53f7\u6574\u578b\uff1auint8\u3001uint16\u3001uint32\u3001uint64<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u7c7b\u578b<\/strong><\/td><td><strong>\u8303\u56f4<\/strong><\/td><td><strong>\u5360\u7528\u7a7a\u95f4<\/strong><\/td><td><strong>\u6709\u65e0\u7b26\u53f7<\/strong><\/td><\/tr><tr><td>int8<\/td><td>(-128 \u5230 127)    -2<sup>^7<\/sup> \u5230 2<sup>^7<\/sup>-1<\/td><td>1\u4e2a\u5b57\u8282<\/td><td>\u6709<\/td><\/tr><tr><td>int16<\/td><td>(-32768 \u5230 32767)    -2<sup>^15<\/sup> \u5230 2<sup>^15<\/sup>-1<\/td><td>2\u4e2a\u5b57\u8282<\/td><td>\u6709<\/td><\/tr><tr><td>int32<\/td><td>(-2147483648 \u5230 2147483647)    -2<sup>^31<\/sup> \u5230 21<sup>^31<\/sup>-1<\/td><td>4\u4e2a\u5b57\u8282<\/td><td>\u6709<\/td><\/tr><tr><td>int64<\/td><td>(-9223372036854775808 \u5230 9223372036854775807)    -2<sup>^63<\/sup> \u5230 2<sup>^63<\/sup>-1<\/td><td>8\u4e2a\u5b57\u8282<\/td><td>\u6709<\/td><\/tr><tr><td>uint8<\/td><td>(0 \u5230 255)    0 \u5230 2<sup>^8<\/sup>-1<\/td><td>1\u4e2a\u5b57\u8282<\/td><td>\u65e0<\/td><\/tr><tr><td>uint16<\/td><td>(0 \u5230 65535)    0 \u5230 2<sup>^16<\/sup>-1<\/td><td>2\u4e2a\u5b57\u8282<\/td><td>\u65e0<\/td><\/tr><tr><td>uint32<\/td><td>(0 \u5230 4294967275)    0 \u5230 2<sup>^32<\/sup>-1<\/td><td>4\u4e2a\u5b57\u8282<\/td><td>\u65e0<\/td><\/tr><tr><td>uint64<\/td><td>(0 \u5230 18446744073709551615)    0 \u5230 2<sup>^64<\/sup>-1<\/td><td>8\u4e2a\u5b57\u8282<\/td><td>\u65e0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5173\u4e8e\u5b57\u8282\uff1a<\/strong><br>\u2460 \u5b57\u8282\u4e5f\u53ebByte\uff0c\u662f\u8ba1\u7b97\u673a\u6570\u636e\u7684\u57fa\u672c\u5b58\u50a8\u5355\u4f4d\u3002<br>\u2461 8bit(\u4f4d)=1Byte(\u5b57\u8282) 1024Byte(\u5b57\u8282)=1KB<br>\u2462 1024KB=1MB 1024MB=1GB<br>\u2463 1024GB=1TB\u3002\u5728\u7535\u8111\u91cc\uff0c\u4e00\u4e2a\u4e2d\u6587\u5b57\u662f\u5360\u4e24\u4e2a\u5b57\u8282\u7684\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E6%95%B0%E5%AD%97%E5%AE%9A%E4%B9%89\"><\/span>2. \u6570\u5b57\u5b9a\u4e49<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"21_%E5%AE%9A%E4%B9%89%E6%95%B0%E5%AD%97%E7%B1%BB%E5%9E%8B\"><\/span>2.1 \u5b9a\u4e49\u6570\u5b57\u7c7b\u578b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>package main\n\nimport \"fmt\"\n\nfunc main() {\n    var a int8 = 4\n    var b int32 = 4\n    var c int64 = 4\n    d := 4\n    fmt.Printf(\"a: %T %v \\n\", a, a)\n    fmt.Printf(\"b: %T %v \\n\", b, b)\n    fmt.Printf(\"c: %T %v \\n\", c, c)\n    fmt.Printf(\"d: %T %v \\n\", d, d)\n}\n\n\/*\na: int8 4 \nb: int32 4 \nc: int64 4 \nd: int 4 \n*\/<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"22_reflectTypeOf%E6%9F%A5%E7%9C%8B%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B\"><\/span>2.2 reflect.TypeOf\u67e5\u770b\u6570\u636e\u7c7b\u578b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n)\n\nfunc main() {\n    c := 18\n    fmt.Println(reflect.TypeOf(c))\n}\n\n\/*\nint\n*\/<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E5%B8%83%E5%B0%94%E5%80%BC\"><\/span>3. \u5e03\u5c14\u503c<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Go\u8bed\u8a00\u4e2d\uff0c\u4ee5 bool \u7c7b\u578b\u8fdb\u884c\u58f0\u660e\u5e03\u5c14\u578b\u6570\u636e\uff0c\u5e03\u5c14\u578b\u6570\u636e\u53ea\u6709true\uff08\u771f\uff09\u548cfalse\uff08\u5047\uff09\u4e24\u4e2a\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\uff1a<\/strong><br>\u2460 \u5e03\u5c14\u7c7b\u578b\u53d8\u91cf\u7684\u9ed8\u8ba4\u503c\u4e3afalse\u3002<br>\u2461 Go\u8bed\u8a00\u4e2d\uff0c\u4e0d\u5141\u8bb8\u5c06\u6574\u578b\u5f3a\u5236\u8f6c\u6362\u4e3a\u5e03\u5c14\u578b\u3002<br>\u2462 \u5e03\u5c14\u578b\u65e0\u6cd5\u53c2\u4e0e\u6570\u503c\u8fd0\u7b97\uff0c\u4e5f\u65e0\u6cd5\u4e0e\u5176\u4ed6\u7c7b\u578b\u8fdb\u884c\u8f6c\u6362\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package main\n\nimport (\n    \"fmt\"\n    \"unsafe\"\n)\n\nfunc main() {\n    var b = true\n    fmt.Println(b, \"\u5360\u7528\u5b57\u8282\uff1a\", unsafe.Sizeof(b))\n}\n\n\/*\ntrue \u5360\u7528\u5b57\u8282\uff1a 1\n*\/\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<div class=\"pps-series-post-details pps-series-post-details-variant-classic pps-series-post-details-1788 pps-series-meta-excerpt\" data-series-id=\"21\"><div class=\"pps-series-meta-content\"><div class=\"pps-series-meta-text\">This entry is \u7b2c 3 \u90e8\u5206\uff0c\u5171 3 in the series <a href=\"https:\/\/www.dataz8.com\/?series=go%e8%af%ad%e8%a8%80%e5%ad%a6%e4%b9%a0%e4%b9%8b%e8%b7%af\">Go(Golang)\u5b66\u4e60\u4e4b\u8def<\/a><\/div><\/div><\/div><p>1. \u6570\u5b57\u7c7b\u578b 1.1 Golang\u6570\u636e\u7c7b\u578b\u4ecb\u7ecd 1.2 \u6574 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_zb_attr":"","zolo_post_video_link":"","footnotes":""},"categories":[23],"tags":[],"series":[21],"class_list":["post-1166","post","type-post","status-publish","format-standard","hentry","category-go","series-go"],"_links":{"self":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/1166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1166"}],"version-history":[{"count":24,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/1166\/revisions"}],"predecessor-version":[{"id":1209,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/1166\/revisions\/1209"}],"wp:attachment":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1166"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=1166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}