{"id":4067,"date":"2023-10-03T18:30:53","date_gmt":"2023-10-03T09:30:53","guid":{"rendered":"https:\/\/dennie.tokyo\/it\/?p=4067"},"modified":"2025-07-10T19:23:04","modified_gmt":"2025-07-10T10:23:04","slug":"%e3%80%90go%e3%80%91%e3%83%81%e3%83%a3%e3%83%8d%e3%83%ab%e3%81%ae%e5%9f%ba%e6%9c%ac%e7%9a%84%e3%81%aa%e4%bd%bf%e3%81%84%e6%96%b9","status":"publish","type":"post","link":"https:\/\/dennie.tokyo\/it\/?p=4067","title":{"rendered":"\u3010Go\u3011\u30c1\u30e3\u30cd\u30eb\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9"},"content":{"rendered":"\n<p>\u524d\u56de\u306fGo\u306e\u4e26\u884c\u51e6\u7406\u306e\u57fa\u672c\u3068\u306a\u308b\u30b4\u30eb\u30fc\u30c1\u30f3\u3001\u30c1\u30e3\u30cd\u30eb\u3068\u3044\u3046\u8981\u7d20\u306b\u3064\u3044\u3066\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<div class=\"title_box\"><span class=\"box-title\">\u524d\u56de<\/span>\n<p><\/p>\n<p><a href=\"https:\/\/dennie.tokyo\/it\/?p=4055\" rel=\"noopener\" target=\"_blank\">\u3010Go\u3011\u4e26\u884c\u51e6\u7406 \u5165\u9580<\/a><\/p>\n<\/div>\n\n\n\n<p>\u524d\u56de\u306e\u5185\u5bb9\u3068\u88ab\u308b\u3068\u3053\u308d\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u30c1\u30e3\u30cd\u30eb\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u3068\u306f<\/h1>\n\n\n\n<p>\u30eb\u30fc\u30c1\u30f3(\u95a2\u6570)\u540c\u58eb\u3067\u5024\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3046\u70ba\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u5909\u6570\u306e\u5ba3\u8a00<\/h1>\n\n\n\n<p>make\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30ad\u30fc\u30ef\u30fc\u30c9 &#8220;chan&#8221; \u3068\u30c1\u30e3\u30cd\u30eb\u3067\u9001\u53d7\u4fe1\u3059\u308b\u5024\u306e\u578b\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<br>\u5ba3\u8a00\u3057\u305f\u5909\u6570\u306fmake\u95a2\u6570\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u53c2\u7167\u578b(\u30dd\u30a4\u30f3\u30bf)\u3068\u306a\u308b\u4e8b\u306b\u6ce8\u610f\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>channelA := make(chan string)<\/code><\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u3078\u306e\u8aad\u307f\u66f8\u304d<\/h1>\n\n\n\n<p>\u30eb\u30fc\u30c1\u30f3(\u95a2\u6570)\u540c\u58eb\u304c\u30c1\u30e3\u30cd\u30eb\u3092\u901a\u3058\u3066\u5024\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3046\u70ba\u3001\u30c1\u30e3\u30cd\u30eb\u3078\u5024\u306e\u66f8\u304d\u8fbc\u307f\u3001\u8aad\u307f\u8fbc\u307f\u304c\u884c\u3048\u307e\u3059\u3002<br>\u5024\u306f\u30c1\u30e3\u30cd\u30eb\u3092\u5ba3\u8a00\u3057\u305f\u969b\u306b\u5b9a\u7fa9\u3057\u305f\u578b\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30c1\u30e3\u30cd\u30eb\u306e\u9001\u53d7\u4fe1\u306e\u578b\u304cstring\u306e\u5834\u5408 &#8211; \u66f8\u304d\u8fbc\u307f\u4f8b<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>channel &lt;- &quot;sampleGoRoutineA&quot;<\/code><\/pre><\/div>\n\n\n\n<p>\u30c1\u30e3\u30cd\u30eb\u306e\u9001\u53d7\u4fe1\u306e\u578b\u304cstring\u306e\u5834\u5408 &#8211; \u8aad\u307f\u8fbc\u307f\u4f8b<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>val := &lt;-channel<\/code><\/pre><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u306e\u65b9\u5411\u6027<\/h1>\n\n\n\n<p>\u30c1\u30e3\u30cd\u30eb\u306f\u30eb\u30fc\u30c1\u30f3(\u95a2\u6570)\u540c\u58eb\u304c\u5024\u3092\u9001\u53d7\u4fe1\u3059\u308b\u70ba\u306e\u3082\u306e\u306a\u306e\u3067\u3001\u4e00\u3064\u306e\u30eb\u30fc\u30c1\u30f3\u3067\u30c1\u30e3\u30cd\u30eb\u306e\u8aad\u307f\u66f8\u304d\u3092\u884c\u3046\u306e\u306f\u4e00\u822c\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u70ba\u3001\u95a2\u6570\u306e\u5f15\u6570\u306b\u30c1\u30e3\u30cd\u30eb\u304c\u8aad\u307f\u8fbc\u307f\u5c02\u7528\u306a\u306e\u304b\u3001\u66f8\u304d\u8fbc\u307f\u5c02\u7528\u306a\u306e\u304b\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u66f8\u304d\u8fbc\u307f\u3001\u8aad\u307f\u8fbc\u307f\u5c02\u7528\u3068\u3057\u3066\u5ba3\u8a00\u3057\u306a\u304f\u3066\u3082\u52d5\u4f5c\u3057\u307e\u3059\u304c\u3001\u5ba3\u8a00\u3057\u3066\u304a\u304f\u3053\u3068\u3067Go\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8aad\u307f\u8fbc\u307f\u5c02\u7528\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u306a\u3063\u3066\u3044\u306a\u3044\u304b\u3001\u307e\u305f\u306f\u305d\u306e\u9006\u3092\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u77e5\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\/\/ \u66f8\u304d\u8fbc\u307f\u5c02\u7528\nfunc sampleGoRoutineA(channel chan&lt;- string) {\n\t\tchannel &lt;- &quot;sampleGoRoutineA&quot;\n}\n\n\/\/ \u8aad\u307f\u8fbc\u307f\u5c02\u7528\nfunc sampleGoRoutineB(channel &lt;-chan string) {\n\t\tval := &lt;-channel\n}<\/code><\/pre><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u306e\u30af\u30ed\u30fc\u30ba<\/h1>\n\n\n\n<p>\u524d\u56de\u306e\u8aac\u660e\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u304c\u3001\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3059\u308b\u4e8b\u304c\u3067\u304d\u307e\u3059\u3002<br>\u7279\u5225\u306a\u5834\u5408\u3092\u9664\u3044\u3066\u3001\u66f8\u304d\u8fbc\u307f\u5074\u3067\u30c1\u30e3\u30cd\u30eb\u3078\u306e\u66f8\u304d\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30af\u30ed\u30fc\u30ba\u306e\u65b9\u6cd5<\/h2>\n\n\n\n<p>close(\u30c1\u30e3\u30cd\u30eb\u540d)\u3067\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>close(channel)<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u30af\u30ed\u30fc\u30ba\u3055\u308c\u305f\u304b\u306e\u5224\u65ad<\/h2>\n\n\n\n<p>\u8aad\u307f\u8fbc\u307f\u5074\u306f\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3055\u308c\u308b\u3068\u30d6\u30ed\u30c3\u30af\u304c\u89e3\u9664\u3055\u308c\u5f8c\u7d9a\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<br>\u30c1\u30e3\u30cd\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u3081\u308b\u5024\u306f\u3001\u66f8\u304d\u8fbc\u307f\u3055\u308c\u305f\u5024\u304c\u306a\u3044\u5834\u5408\u3001\u30c1\u30e3\u30cd\u30eb\u5ba3\u8a00\u3057\u305f\u5909\u6570\u306e\u578b\u306e\u30bc\u30ed\u5024\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<br>\u3053\u306e\u70ba\u3001\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002(\u610f\u56f3\u7684\u306a\u30bc\u30ed\u5024\u306a\u306e\u304b\u30af\u30ed\u30fc\u30ba\u3055\u308c\u305f\u30bc\u30ed\u5024\u304b\u5206\u304b\u3089\u306a\u3044)<br>\u8aad\u307f\u8fbc\u307f\u5074\u306f\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u306b\u306f\u30ab\u30f3\u30deOK\u30a4\u30c7\u30a3\u30aa\u30e0\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<br>2\u3064\u76ee\u306e\u8fd4\u308a\u5024\u304cfalse\u306e\u5834\u5408\u3001\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3055\u308c\u3066\u3044\u308b\u4e8b\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u3064\u76ee\u306e\u5024\u306b\u306f\u30c1\u30e3\u30cd\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u3093\u3060\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>m, ok := &lt;-channelA<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u610f\u56f3\u7684\u306b\u30c1\u30e3\u30cd\u30eb\u306b\u5024\u3092\u66f8\u304d\u8fbc\u307e\u305a\u306b\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3057\u3001\u30af\u30ed\u30fc\u30ba\u3055\u308c\u305f\u4e8b\u3092\u691c\u77e5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n\t&quot;time&quot;\n)\n\nfunc sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\t\/\/channel &lt;- &quot;\u7d42\u4e86A \\n&quot;\n\tclose(channel)\n}\n\nfunc main() {\n\tchannelA := make(chan string)\n\tgo sampleGoRoutineA(channelA)\n\n\tm, ok := &lt;-channelA\n\tif ok {\n\t\tfmt.Println(m)\n\t} else {\n\t\tfmt.Println(&quot;channel closed&quot;)\n\t}\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3010\u958b\u59cb\u3011 19:26:52 sampleGoRoutineA \n\u3010\u7d42\u4e86\u3011 19:26:57 sampleGoRoutineA \nchannel closed<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u306e\u5024\u53d6\u5f97\u3068\u30af\u30ed\u30fc\u30ba<\/h2>\n\n\n\n<p>\u5148\u307b\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3066\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u5074\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u30c1\u30e3\u30cd\u30eb\u3078\u66f8\u304d\u8fbc\u307f\u3092\u30c1\u30e3\u30cd\u30eb\u306e\u30af\u30ed\u30fc\u30ba\u306e\u524d\u306b\u884c\u3046\u3068\u3001\u30e1\u30a4\u30f3\u30eb\u30fc\u30c1\u30f3\u3067\u306f\u30af\u30ed\u30fc\u30ba\u3092\u5f85\u305f\u305a\u306b\u51e6\u7406\u304c\u7d99\u7d9a\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3042\u307e\u308a\u610f\u5473\u304c\u306a\u3044\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>func sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\tchannel &lt;- &quot;\u7d42\u4e86A \\n&quot;\n\tclose(channel)\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u30c1\u30e3\u30cd\u30eb\u306e\u30af\u30ed\u30fc\u30ba\u3082\u884c\u3044\u305f\u3044\u5834\u5408\u3001For\u6587\u3084For range\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n\t&quot;time&quot;\n)\n\nfunc sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\tchannel &lt;- &quot;\u7d42\u4e86A \\n&quot;\n\tclose(channel)\n}\n\nfunc main() {\n\tchannelA := make(chan string)\n\tgo sampleGoRoutineA(channelA)\n\n\tm, ok := &lt;-channelA\n\tfor {\n\t\tm, ok := &lt;-channelA\n\t\tif ok {\n\t\t\tfmt.Printf(m)\n\t\t} else {\n\t\t\tfmt.Printf(&quot;channel closed&quot;)\n\t\t\tbreak\n\t\t}\n\t}\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3010\u958b\u59cb\u3011 19:38:03 sampleGoRoutineA \n\u3010\u7d42\u4e86\u3011 19:38:08 sampleGoRoutineA \n\u7d42\u4e86A \nchannel closed<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">For range\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u3053\u3061\u3089\u306e\u65b9\u304c\u30b9\u30de\u30fc\u30c8\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n\t&quot;time&quot;\n)\n\nfunc sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\tchannel &lt;- &quot;\u7d42\u4e86A \\n&quot;\n\tclose(channel)\n}\n\nfunc main() {\n\tchannelA := make(chan string)\n\tgo sampleGoRoutineA(channelA)\n\n\tfor val := range channelA {\n\t\tfmt.Printf(val)\n\t}\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3010\u958b\u59cb\u3011 19:41:03 sampleGoRoutineA \n\u3010\u7d42\u4e86\u3011 19:41:08 sampleGoRoutineA \n\u7d42\u4e86A <\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c1\u30e3\u30cd\u30eb\u30af\u30ed\u30fc\u30ba\u306e\u5fc5\u8981\u6027<\/h2>\n\n\n\n<p>\u30c1\u30e3\u30cd\u30eb\u3078\u306e\u66f8\u304d\u8fbc\u307f\u3001\u8aad\u307f\u8fbc\u307f\u304c\u7d42\u308f\u308c\u3070\u305d\u308c\u3067\u3088\u3044\u306e\u3067\u30af\u30ed\u30fc\u30ba\u306f\u5fc5\u8981\u306a\u3044\u306e\u3067\u306f\uff1f\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u30af\u30ed\u30fc\u30ba\u3057\u306a\u3044\u3068\u6c38\u9060\u306b\u30c1\u30e3\u30cd\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u70ba\u3001\u30c7\u30c3\u30c8\u30ed\u30c3\u30af\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5f93\u3063\u3066\u5f79\u76ee\u3092\u7d42\u3048\u305f\u30c1\u30e3\u30cd\u30eb\u306f\u30af\u30ed\u30fc\u30ba\u3057\u307e\u3057\u3087\u3046\u3002<br>\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u305b\u305a\u30c7\u30c3\u30c8\u30ed\u30c3\u30af\u3092\u8d77\u3053\u3057\u3066\u3057\u307e\u3046\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For range \u3067\u306e\u30c7\u30c3\u30c8\u30ed\u30c3\u30af<\/h3>\n\n\n\n<p>For range \u306f\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3059\u308b\u307e\u3067\u30c1\u30e3\u30cd\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u305d\u306e\u70ba\u30af\u30ed\u30fc\u30ba\u3057\u306a\u3044\u3068\u8aad\u307f\u8fbc\u307f\u5f85\u3061\u304c\u7d9a\u304f\u4e8b\u306b\u3088\u308b\u30c7\u30c3\u30c8\u30ed\u30c3\u30af\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n\t&quot;time&quot;\n)\n\nfunc sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\tchannel &lt;- &quot;\u3042\u3042\u3042\u3042&quot;\n}\n\nfunc main() {\n\tchannelA := make(chan string)\n\tgo sampleGoRoutineA(channelA)\n\n\tfor val := range channelA {\n\t\tfmt.Printf(val)\n\t}\n}\n<\/code><\/pre><\/div>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3010\u958b\u59cb\u3011 10:28:25 sampleGoRoutineA \n\u3010\u7d42\u4e86\u3011 10:28:30 sampleGoRoutineA \n\u3042\u3042\u3042\u3042fatal error: all goroutines are asleep - deadlock!\n\ngoroutine 1 [chan receive]:\nmain.main()\n\t\/Users\/hoge\/main.go:46 +0xad\nexit status 2<\/code><\/pre><\/div>\n\n\n\n<p>\u30b4\u30eb\u30fc\u30c1\u30f3\u5074\u3067\u30af\u30ed\u30fc\u30ba\u51e6\u7406\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>func sampleGoRoutineA(channel chan&lt;- string) {\n\tfmt.Printf(&quot;\u3010\u958b\u59cb\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\ttime.Sleep(5 * time.Second)\n\tfmt.Printf(&quot;\u3010\u7d42\u4e86\u3011 &quot; + time.Now().Format(time.TimeOnly) + &quot; sampleGoRoutineA \\n&quot;)\n\tchannel &lt;- &quot;\u3042\u3042\u3042\u3042&quot;\n\tclose(channel)\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u305b\u305a\u6b63\u5e38\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\u3010\u958b\u59cb\u3011 10:37:48 sampleGoRoutineA \n\u3010\u7d42\u4e86\u3011 10:37:53 sampleGoRoutineA \n\u3042\u3042\u3042\u3042<\/code><\/pre><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u6700\u5f8c\u306b<\/h1>\n\n\n\n<p>\u4eca\u56de\u306f\u30c1\u30e3\u30cd\u30eb\u306e\u5168\u3066\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u30c1\u30e3\u30cd\u30eb\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u56de\u306fGo\u306e\u4e26\u884c\u51e6\u7406\u306e\u57fa\u672c\u3068\u306a\u308b\u30b4\u30eb\u30fc\u30c1\u30f3\u3001\u30c1\u30e3\u30cd\u30eb\u3068\u3044\u3046\u8981\u7d20\u306b\u3064\u3044\u3066\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"author":1,"featured_media":968,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-4067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-go"],"_links":{"self":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/4067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4067"}],"version-history":[{"count":20,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/4067\/revisions"}],"predecessor-version":[{"id":4105,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/4067\/revisions\/4105"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/media\/968"}],"wp:attachment":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}