{"id":57604,"date":"2024-10-10T19:38:17","date_gmt":"2024-10-10T11:38:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57604\/"},"modified":"2024-10-10T19:38:17","modified_gmt":"2024-10-10T11:38:17","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-for-range%ef%bc%88%e9%8d%b5%e5%80%bc%e5%be%aa%e7%92%b0%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57604\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00 for range\uff08\u9375\u503c\u5faa\u74b0\uff09"},"content":{"rendered":"

GO\u6559\u7a0b: Go \u8a9e\u8a00 for range\uff08\u9375\u503c\u5faa\u74b0\uff09<\/h1>\n

\u5728 Go \u8a9e\u8a00\u4e2d\uff0cfor range<\/code> \u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684\u8a9e\u6cd5\u7d50\u69cb\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u904d\u6b77\u6578\u7d44\u3001\u5207\u7247\u3001\u6620\u5c04\uff08map\uff09\u548c\u901a\u9053\uff08channel\uff09\u6642\uff0c\u8f15\u9b06\u7372\u53d6\u7d22\u5f15\u548c\u5c0d\u61c9\u7684\u503c\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e for range<\/code> \u7684\u7528\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u969b\u7684\u7bc4\u4f8b\u4f86\u5e6b\u52a9\u7406\u89e3\u3002<\/p>\n

\u57fa\u672c\u8a9e\u6cd5<\/h2>\n

for range<\/code> \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

for index, value := range collection {\n    \/\/ \u4f7f\u7528 index \u548c value\n}<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0ccollection<\/code> \u53ef\u4ee5\u662f\u6578\u7d44\u3001\u5207\u7247\u3001\u6620\u5c04\u6216\u901a\u9053\u3002index<\/code> \u662f\u7576\u524d\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u800c value<\/code> \u662f\u7576\u524d\u5143\u7d20\u7684\u503c\u3002<\/p>\n
\u904d\u6b77\u6578\u7d44\u548c\u5207\u7247<\/h2>\n
\u9996\u5148\uff0c\u6211\u5011\u4f86\u770b\u770b\u5982\u4f55\u4f7f\u7528 for range<\/code> \u904d\u6b77\u6578\u7d44\u548c\u5207\u7247\u3002<\/p>\n
package main\n\nimport \"fmt\"\n\nfunc main() {\n    \/\/ \u5b9a\u7fa9\u4e00\u500b\u6578\u7d44\n    arr := [3]int{10, 20, 30}\n    \n    \/\/ \u4f7f\u7528 for range \u904d\u6b77\u6578\u7d44\n    for index, value := range arr {\n        fmt.Printf(\"\u7d22\u5f15: %d, \u503c: %dn\", index, value)\n    }\n\n    \/\/ \u5b9a\u7fa9\u4e00\u500b\u5207\u7247\n    slice := []string{\"apple\", \"banana\", \"cherry\"}\n    \n    \/\/ \u4f7f\u7528 for range \u904d\u6b77\u5207\u7247\n    for index, value := range slice {\n        fmt.Printf(\"\u7d22\u5f15: %d, \u503c: %sn\", index, value)\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u6574\u6578\u6578\u7d44\u548c\u4e00\u500b\u5b57\u7b26\u4e32\u5207\u7247\uff0c\u7136\u5f8c\u4f7f\u7528 for range<\/code> \u4f86\u904d\u6b77\u5b83\u5011\uff0c\u4e26\u6253\u5370\u51fa\u6bcf\u500b\u5143\u7d20\u7684\u7d22\u5f15\u548c\u5c0d\u61c9\u7684\u503c\u3002<\/p>\n
\u904d\u6b77\u6620\u5c04\uff08map\uff09<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u4f86\u770b\u770b\u5982\u4f55\u4f7f\u7528 for range<\/code> \u904d\u6b77\u6620\u5c04\u3002<\/p>\n
package main\n\nimport \"fmt\"\n\nfunc main() {\n    \/\/ \u5b9a\u7fa9\u4e00\u500b\u6620\u5c04\n    m := map[string]int{\"apple\": 1, \"banana\": 2, \"cherry\": 3}\n    \n    \/\/ \u4f7f\u7528 for range \u904d\u6b77\u6620\u5c04\n    for key, value := range m {\n        fmt.Printf(\"\u9375: %s, \u503c: %dn\", key, value)\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u5b57\u7b26\u4e32\u5230\u6574\u6578\u7684\u6620\u5c04\uff0c\u7136\u5f8c\u4f7f\u7528 for range<\/code> \u4f86\u904d\u6b77\u5b83\uff0c\u4e26\u6253\u5370\u51fa\u6bcf\u500b\u9375\u53ca\u5176\u5c0d\u61c9\u7684\u503c\u3002<\/p>\n
\u904d\u6b77\u901a\u9053\uff08channel\uff09<\/h2>\n
\u6700\u5f8c\uff0c\u6211\u5011\u4f86\u770b\u770b\u5982\u4f55\u4f7f\u7528 for range<\/code> \u904d\u6b77\u901a\u9053\u3002<\/p>\n
package main\n\nimport \"fmt\"\n\nfunc main() {\n    \/\/ \u5b9a\u7fa9\u4e00\u500b\u901a\u9053\n    ch := make(chan int)\n\n    \/\/ \u4f7f\u7528 goroutine \u767c\u9001\u6578\u64da\n    go func() {\n        for i := 0; i < 5; i++ {\n            ch <- i\n        }\n        close(ch) \/\/ \u95dc\u9589\u901a\u9053\n    }()\n\n    \/\/ \u4f7f\u7528 for range \u904d\u6b77\u901a\u9053\n    for value := range ch {\n        fmt.Printf("\u63a5\u6536\u5230\u7684\u503c: %dn", value)\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u6574\u6578\u901a\u9053\uff0c\u4e26\u4f7f\u7528 goroutine \u767c\u9001\u6578\u64da\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 for range<\/code> \u4f86\u63a5\u6536\u901a\u9053\u4e2d\u7684\u6578\u64da\uff0c\u76f4\u5230\u901a\u9053\u88ab\u95dc\u9589\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Go \u8a9e\u8a00\u4e2d\u7684 for range<\/code> \u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u6f54\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u904d\u6b77\u5404\u7a2e\u6578\u64da\u7d50\u69cb\u3002\u7121\u8ad6\u662f\u6578\u7d44\u3001\u5207\u7247\u3001\u6620\u5c04\u9084\u662f\u901a\u9053\uff0cfor range<\/code> \u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u7372\u53d6\u7d22\u5f15\u548c\u5c0d\u61c9\u7684\u503c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7de8\u7a0b\u6548\u7387\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 Go \u8a9e\u8a00\u4e2d\u7684 range \u7528\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u5730\u9032\u884c\u9375\u503c\u5faa\u74b0\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u80fd\u8207\u6548\u7387\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-57604","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57604","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=57604"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57604\/revisions"}],"predecessor-version":[{"id":57605,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57604\/revisions\/57605"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}