{"id":304,"date":"2025-08-05T11:01:39","date_gmt":"2025-08-05T03:01:39","guid":{"rendered":"https:\/\/ziyuan.work\/?p=304"},"modified":"2025-11-12T14:58:24","modified_gmt":"2025-11-12T06:58:24","slug":"golang-range","status":"publish","type":"post","link":"https:\/\/ziyuan.work\/?p=304","title":{"rendered":"Golang Range"},"content":{"rendered":"\n<p>Golang\u7684range\u53ef\u4ee5\u7528\u6765\u904d\u5386array\uff0cslice\uff0cstring\uff0cmap\u6216channel<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>range array\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func main() {\n\tanimals := &#91;3]string{}\n\tanimals&#91;0] = \"tiger\"\n\tanimals&#91;1] = \"cat\"\n\tanimals&#91;2] = \"lion\"\n\tfor index, animal := range animals {\n\t\tfmt.Println(index, animal)\n\t}\n}\n\n\/\/<strong>output<\/strong>:\n\/\/0 tiger\n\/\/1 cat\n\/\/2 lion<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>range slice\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func main() {\n\turls := &#91;]string{\"ziyaun.work\", \"https:\/\/ziyuan.work\"}\n\tfor index, url := range urls {\n\t\tfmt.Println(index, url)\n\t}\n}\n\n\/\/<strong>output<\/strong>:\n\/\/0 ziyaun.work\n\/\/1 https:\/\/ziyuan.work<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>range string\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func main() {\n\turl := \"ziyuan.work\"\n\tfor i, v := range url {\n\t\tfmt.Println(i, v)\n\t}\n}\n\n\/\/<strong>output<\/strong>:\n\/\/0 122\n\/\/1 105\n\/\/2 121\n\/\/3 117\n\/\/4 97\n\/\/5 110\n\/\/6 46\n\/\/7 119\n\/\/8 111\n\/\/9 114\n\/\/10 107<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>range map\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func main() {\n\tuserList := make(map&#91;string]string)\n\tuserList&#91;\"url\"] = \"ziyuan.work\"\n\tfor key, value := range userList {\n\t\tvalue = \"I change myself\" \/\/\u6539\u53d8\u7684\u53ea\u662f\u63d0\u53d6item\u7684\u503c\uff0cuserlist\u4e0d\u53d7\u5f71\u54cd\n\t\tfmt.Println(userList&#91;key])\n\t\tfmt.Println(value)\n\t}\n}\n\n\/\/ <strong>output<\/strong>:\n\/\/ziyuan.work\n\/\/I change myself<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>range channel\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func main() {\n\twg := sync.WaitGroup{}\n\twg.Add(1)\n\n\tc := make(chan int)\n\tgo func() {\n\t\tdefer wg.Done()\n\t\tfor i := 0; i &lt; 10; i++ {\n\t\t\tc &lt;- i\n\t\t}\n\t}()\n\n\tgo func() {\n\t\twg.Wait()\n\t\tclose(c)\n\t}() \/\/ \u5f53\u4f7f\u7528range\u5bf9channel\u64cd\u4f5c\u65f6\uff0c\u4f1a\u65e0\u9650\u904d\u5386\uff0c\u6700\u7ec8\u53d8\u6210\u6b7b\u9501\uff0c\u56e0\u6b64\u9700\u8981\u5173\u95edchannel\n\n\tfor value := range c {\n\t\tlog.Println(value)\n\t}\n}\n\n\/\/<strong>output<\/strong>:\n\/\/0\n\/\/1\n\/\/2\n\/\/3\n\/\/4\n\/\/5\n\/\/6\n\/\/7\n\/\/8\n\/\/9<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Golang\u7684range\u53ef\u4ee5\u7528\u6765\u904d\u5386array\uff0cslice\uff0cstring\uff0cmap\u6216channel range  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-304","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=304"}],"version-history":[{"count":19,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions"}],"predecessor-version":[{"id":323,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions\/323"}],"wp:attachment":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}