{"id":3158,"date":"2025-03-25T23:35:03","date_gmt":"2025-03-25T15:35:03","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3158"},"modified":"2025-03-25T23:35:03","modified_gmt":"2025-03-25T15:35:03","slug":"go-%e8%af%ad%e8%a8%80%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/25\/go-%e8%af%ad%e8%a8%80%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e8%af%a6%e8%a7%a3\/","title":{"rendered":"Go \u8bed\u8a00\u6570\u636e\u7c7b\u578b\u8be6\u89e3"},"content":{"rendered":"\n<p>Go \u8bed\u8a00\u662f\u4e00\u79cd\u9759\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u5728\u7f16\u8bd1\u65f6\u5c31\u4f1a\u5bf9\u53d8\u91cf\u7684\u7c7b\u578b\u8fdb\u884c\u68c0\u67e5\u548c\u7ed1\u5b9a\u3002\u6570\u636e\u7c7b\u578b\u53ef\u5206\u4e3a\u57fa\u672c\u7c7b\u578b\u3001\u590d\u5408\u7c7b\u578b\u3001\u5f15\u7528\u7c7b\u578b\u548c\u63a5\u53e3\u7c7b\u578b\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u8bb2\u89e3 Go \u8bed\u8a00\u7684\u6570\u636e\u7c7b\u578b\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. \u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08Primitive Types\uff09<\/strong><\/h2>\n\n\n\n<p>Go \u8bed\u8a00\u63d0\u4f9b\u4e86\u4e00\u4e9b\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6574\u6570\u7c7b\u578b<\/strong>\uff1a<code>int<\/code>\u3001<code>uint<\/code>\u3001<code>int8<\/code>\u3001<code>uint8<\/code>\u3001<code>int16<\/code>\u3001<code>uint16<\/code>\u3001<code>int32<\/code>\u3001<code>uint32<\/code>\u3001<code>int64<\/code>\u3001<code>uint64<\/code><\/li>\n\n\n\n<li><strong>\u6d6e\u70b9\u7c7b\u578b<\/strong>\uff1a<code>float32<\/code>\u3001<code>float64<\/code><\/li>\n\n\n\n<li><strong>\u590d\u6570\u7c7b\u578b<\/strong>\uff1a<code>complex64<\/code>\u3001<code>complex128<\/code><\/li>\n\n\n\n<li><strong>\u5e03\u5c14\u7c7b\u578b<\/strong>\uff1a<code>bool<\/code><\/li>\n\n\n\n<li><strong>\u5b57\u7b26\u4e32\u7c7b\u578b<\/strong>\uff1a<code>string<\/code><\/li>\n\n\n\n<li><strong>\u5b57\u8282\u7c7b\u578b<\/strong>\uff1a<code>byte<\/code>\uff08\u7b49\u4ef7\u4e8e <code>uint8<\/code>\uff09\u3001<code>rune<\/code>\uff08\u7b49\u4ef7\u4e8e <code>int32<\/code>\uff0c\u7528\u4e8e Unicode \u5b57\u7b26\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff081\uff09\u6574\u6570\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var a int = 100\nvar b uint = 200\nvar c int8 = 127\nvar d uint16 = 65535<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>int<\/code> \u548c <code>uint<\/code>\uff1a\u9ed8\u8ba4\u6839\u636e\u7cfb\u7edf\u67b6\u6784\uff0832 \u4f4d\u6216 64 \u4f4d\uff09\u9009\u62e9 <code>int32<\/code> \u6216 <code>int64<\/code>\u3002<\/li>\n\n\n\n<li><code>int8<\/code>\/<code>uint8<\/code>\uff1a8 \u4f4d\u6574\u6570\uff0c<code>int8<\/code> \u8303\u56f4 <code>-128~127<\/code>\uff0c<code>uint8<\/code> \u8303\u56f4 <code>0~255<\/code>\u3002<\/li>\n\n\n\n<li><code>int16<\/code>\/<code>uint16<\/code>\u3001<code>int32<\/code>\/<code>uint32<\/code>\u3001<code>int64<\/code>\/<code>uint64<\/code>\uff1a\u66f4\u5927\u8303\u56f4\u7684\u6574\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff082\uff09\u6d6e\u70b9\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var f1 float32 = 3.14\nvar f2 float64 = 3.1415926535<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>float32<\/code>\uff1a\u7cbe\u5ea6\u8f83\u4f4e\uff0c\u7ea6 6-7 \u4f4d\u5c0f\u6570\u3002<\/li>\n\n\n\n<li><code>float64<\/code>\uff1a\u9ad8\u7cbe\u5ea6\uff0c\u7ea6 15-16 \u4f4d\u5c0f\u6570\uff08\u9ed8\u8ba4\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff083\uff09\u590d\u6570\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var c1 complex64 = complex(1, 2)  \/\/ 1 + 2i\nvar c2 complex128 = complex(3, 4) \/\/ 3 + 4i<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>complex64<\/code> \u7531\u4e24\u4e2a <code>float32<\/code> \u7ec4\u6210\u3002<\/li>\n\n\n\n<li><code>complex128<\/code> \u7531\u4e24\u4e2a <code>float64<\/code> \u7ec4\u6210\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff084\uff09\u5e03\u5c14\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var flag bool = true<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u80fd\u53d6 <code>true<\/code> \u6216 <code>false<\/code>\uff0c\u9ed8\u8ba4\u503c <code>false<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff085\uff09\u5b57\u7b26\u4e32\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var s string = \"Hello, Go!\"\nfmt.Println(len(s)) \/\/ \u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Go \u8bed\u8a00\u7684\u5b57\u7b26\u4e32\u662f<strong>\u4e0d\u53ef\u53d8<\/strong>\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>+<\/code> \u8fde\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u591a\u884c\u5b57\u7b26\u4e32\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>s := `This is \na multi-line string`<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff086\uff09\u5b57\u8282\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var b1 byte = 'A'  \/\/ \u7b49\u4ef7\u4e8e uint8\nvar r rune = '\u56fd'  \/\/ \u7b49\u4ef7\u4e8e int32\nfmt.Println(b1, r) \/\/ 65 22269<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>byte<\/code>\uff1a\u5b58\u50a8 ASCII \u5b57\u7b26\u3002<\/li>\n\n\n\n<li><code>rune<\/code>\uff1a\u5b58\u50a8 Unicode \u5b57\u7b26\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. \u590d\u5408\u6570\u636e\u7c7b\u578b\uff08Composite Types\uff09<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff081\uff09\u6570\u7ec4\uff08Array\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var arr &#91;5]int = &#91;5]int{1, 2, 3, 4, 5}\nfmt.Println(arr&#91;0]) \/\/ \u8bbf\u95ee\u5143\u7d20<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u7ec4\u957f\u5ea6\u662f\u56fa\u5b9a\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff082\uff09\u5207\u7247\uff08Slice\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>s := &#91;]int{1, 2, 3}\nfmt.Println(s&#91;:2]) \/\/ &#91;1, 2]\ns = append(s, 4)   \/\/ \u52a8\u6001\u6269\u5c55<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5207\u7247\u662f\u5bf9\u6570\u7ec4\u7684<strong>\u52a8\u6001\u5f15\u7528<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff083\uff09Map\uff08\u5b57\u5178\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>m := map&#91;string]int{\"Alice\": 90, \"Bob\": 85}\nfmt.Println(m&#91;\"Alice\"])\nm&#91;\"Tom\"] = 88<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>map[KeyType]ValueType<\/code> \u5f62\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff084\uff09\u7ed3\u6784\u4f53\uff08Struct\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>type Person struct {\n    Name string\n    Age  int\n}\np := Person{\"Alice\", 25}\nfmt.Println(p.Name)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>struct<\/code> \u662f Go \u8bed\u8a00<strong>\u81ea\u5b9a\u4e49\u6570\u636e\u7c7b\u578b<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. \u5f15\u7528\u7c7b\u578b\uff08Reference Types\uff09<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff081\uff09\u6307\u9488\uff08Pointer\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var p *int\nnum := 100\np = &amp;num\nfmt.Println(*p) \/\/ 100<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>*T<\/code> \u8868\u793a\u6307\u5411 <code>T<\/code> \u7c7b\u578b\u7684\u6307\u9488\u3002<\/li>\n\n\n\n<li><code>&amp;<\/code> \u53d6\u5730\u5740\uff0c<code>*<\/code> \u89e3\u5f15\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff082\uff09\u63a5\u53e3\uff08Interface\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>type Speaker interface {\n    Speak()\n}\n\ntype Dog struct{}\n\nfunc (d Dog) Speak() {\n    fmt.Println(\"Woof!\")\n}\n\nvar s Speaker = Dog{}\ns.Speak()<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>interface{}<\/code> \u662f<strong>\u6cdb\u578b\u7c7b\u578b<\/strong>\uff0c\u53ef\u5b58\u50a8\u4efb\u4f55\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. \u7279\u6b8a\u6570\u636e\u7c7b\u578b<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff081\uff09\u7a7a\u63a5\u53e3 <code>interface{}<\/code><\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var i interface{} = \"Hello\"\nfmt.Println(i) \/\/ Hello<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u63a5\u53e3\u53ef\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\uff082\uff09<code>nil<\/code><\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var p *int = nil\nvar m map&#91;string]int = nil<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>nil<\/code> \u4ee3\u8868\u672a\u521d\u59cb\u5316\u7684\u5f15\u7528\u7c7b\u578b\uff08\u6307\u9488\u3001map\u3001slice\u3001channel\u3001interface\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. \u7c7b\u578b\u8f6c\u6362<\/strong><\/h2>\n\n\n\n<p>Go \u8bed\u8a00<strong>\u4e0d\u652f\u6301\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/strong>\uff0c\u9700\u8981\u663e\u5f0f\u8f6c\u6362\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var a int = 100\nvar b float64 = float64(a)  \/\/ int \u8f6c float64\nvar c string = strconv.Itoa(a) \/\/ int \u8f6c string<\/code><\/pre>\n\n\n\n<p>\u5e38\u89c1\u8f6c\u6362\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6e90\u7c7b\u578b<\/th><th>\u76ee\u6807\u7c7b\u578b<\/th><th>\u8f6c\u6362\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>int -&gt; float64<\/td><td><code>float64(i)<\/code><\/td><td><\/td><\/tr><tr><td>float64 -&gt; int<\/td><td><code>int(f)<\/code><\/td><td><\/td><\/tr><tr><td>int -&gt; string<\/td><td><code>strconv.Itoa(i)<\/code><\/td><td><\/td><\/tr><tr><td>string -&gt; int<\/td><td><code>strconv.Atoi(s)<\/code><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. \u53c2\u8003\u8d44\u6599<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/golang.org\/doc\/\">Go \u5b98\u65b9\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/golang.org\/pkg\/\">Go \u8bed\u8a00\u6807\u51c6\u5e93<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Go \u8bed\u8a00\u662f\u4e00\u79cd\u9759\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u5728\u7f16\u8bd1\u65f6\u5c31\u4f1a\u5bf9\u53d8\u91cf\u7684\u7c7b\u578b\u8fdb\u884c\u68c0\u67e5\u548c\u7ed1\u5b9a\u3002\u6570\u636e\u7c7b\u578b\u53ef\u5206\u4e3a\u57fa\u672c\u7c7b\u578b\u3001\u590d\u5408\u7c7b\u578b\u3001\u5f15\u7528\u7c7b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3159,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-3158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-golang"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3158"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3158\/revisions"}],"predecessor-version":[{"id":3160,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3158\/revisions\/3160"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3159"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}