{"id":310773,"date":"2024-05-20T21:58:19","date_gmt":"2024-05-20T13:58:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/310773.html"},"modified":"2024-05-20T21:58:29","modified_gmt":"2024-05-20T13:58:29","slug":"go-%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%9a%84-range-%e6%96%b9%e6%b3%95%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/310773.html","title":{"rendered":"go \u7f16\u7a0b\u4e2d\u7684 range \u65b9\u6cd5\u600e\u4e48\u4f7f\u7528"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26231334\/4c026d0f-69cc-4e6b-a5be-442ca07bcf30.webp\" alt=\"go \u7f16\u7a0b\u4e2d\u7684 range \u65b9\u6cd5\u600e\u4e48\u4f7f\u7528\" \/><\/p>\n<p><p>\u5728Go\u7f16\u7a0b\u4e2d\uff0c<code>range<\/code>\u662f\u4e00\u79cd\u5173\u952e\u5b57\uff0c\u7528\u4e8e\u8fed\u4ee3\u904d\u5386\u6570\u7ec4\u3001\u5207\u7247\u3001\u5b57\u7b26\u4e32\u6216\u8005\u6620\u5c04\u7684\u5143\u7d20\u3002\u5728\u4f7f\u7528\u4e0a\uff0c\u5b83\u975e\u5e38\u7075\u6d3b\u548c\u5f3a\u5927\uff0c\u53ef\u4ee5\u83b7\u53d6\u8fed\u4ee3\u7684\u7d22\u5f15\u548c\u503c\u3001\u4ec5\u83b7\u53d6\u7d22\u5f15\u3001\u4ec5\u83b7\u53d6\u503c\u3002\u6211\u5c06\u8be6\u7ec6\u5c55\u5f00\u201c\u83b7\u53d6\u7d22\u5f15\u548c\u503c\u201d\u8fd9\u4e00\u7528\u6cd5\u3002\u5f53\u5bf9\u6570\u7ec4\u3001\u5207\u7247\u6216\u5b57\u7b26\u4e32\u4f7f\u7528<code>range<\/code>\u65f6\uff0c\u6bcf\u6b21\u8fed\u4ee3\u90fd\u4f1a\u8fd4\u56de\u4e24\u4e2a\u503c\uff0c\u7b2c\u4e00\u4e2a\u503c\u662f\u5f53\u524d\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u7b2c\u4e8c\u4e2a\u503c\u662f\u8be5\u7d22\u5f15\u5904\u7684\u503c\u3002\u8fd9\u4e00\u7279\u6027\u4f7f\u5f97\u5728\u9700\u8981\u540c\u65f6\u5904\u7406\u5143\u7d20\u53ca\u5176\u4f4d\u7f6e\u65f6\u975e\u5e38\u65b9\u4fbf\uff0c\u6bd4\u5982\uff0c\u5728\u904d\u5386\u8fc7\u7a0b\u4e2d\u9700\u8981\u4f7f\u7528\u5143\u7d20\u7684\u7d22\u5f15\u6765\u8bbf\u95ee\u5176\u4ed6\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u57fa\u672c\u7528\u6cd5<\/h2>\n<\/p>\n<p><h3>\u83b7\u53d6\u7d22\u5f15\u548c\u503c<\/h3>\n<\/p>\n<p><p>\u5f53\u8fed\u4ee3\u4e00\u4e2a\u6570\u7ec4\u6216\u5207\u7247\u65f6\uff0c<code>range<\/code>\u5c06\u8fd4\u56de\u4e24\u4e2a\u503c\uff1a\u7d22\u5f15\u548c\u8be5\u7d22\u5f15\u5904\u7684\u503c\u3002\u8fd9\u5141\u8bb8\u4f60\u5728\u5faa\u73af\u4f53\u5185\u540c\u65f6\u8bbf\u95ee\u5b83\u4eec\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\u53ca\u5176\u7d22\u5f15\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-go\">nums := []int{10, 20, 30, 40}<\/p>\n<p>for index, value := range nums {<\/p>\n<p>    fmt.Printf(&quot;\u7d22\u5f15\uff1a%d \u503c\uff1a%d\\n&quot;, index, value)<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u6309\u987a\u5e8f\u8f93\u51fa\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u548c\u503c\u3002<\/p>\n<\/p>\n<p><h3>\u4ec5\u83b7\u53d6\u503c<\/h3>\n<\/p>\n<p><p>\u5982\u679c\u4f60\u4e0d\u9700\u8981\u7d22\u5f15\uff0c\u60f3\u8981\u8fed\u4ee3\u83b7\u53d6\u6bcf\u4e2a\u5143\u7d20\u7684\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528<code>_<\/code>\u7b26\u53f7\u6765\u5ffd\u7565\u7d22\u5f15\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-go\">for _, value := range nums {<\/p>\n<p>    fmt.Println(&quot;\u503c\uff1a&quot;, value)<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6837\uff0c\u4f60\u5c31\u53ef\u4ee5\u5355\u72ec\u5904\u7406\u6bcf\u4e2a\u5143\u7d20\u7684\u503c\uff0c\u800c\u4e0d\u662f\u540c\u65f6\u5904\u7406\u5b83\u4eec\u7684\u7d22\u5f15\u548c\u503c\u3002<\/p>\n<\/p>\n<p><h2>\u4e8c\u3001\u8fdb\u9636\u7528\u6cd5<\/h2>\n<\/p>\n<p><h3>\u8fed\u4ee3\u6620\u5c04<\/h3>\n<\/p>\n<p><p>\u5f53\u4f7f\u7528<code>range<\/code>\u8fed\u4ee3\u904d\u5386\u6620\u5c04\uff08map\uff09\u65f6\uff0c\u6bcf\u6b21\u8fed\u4ee3\u5c06\u8fd4\u56de\u4e00\u5bf9\u952e\u548c\u503c\u3002\u8fd9\u5728\u4f60\u9700\u8981\u5bf9\u6620\u5c04\u8fdb\u884c\u5904\u7406\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-go\">m := map[string]string{&quot;a&quot;: &quot;Apple&quot;, &quot;b&quot;: &quot;Banana&quot;}<\/p>\n<p>for key, value := range m {<\/p>\n<p>    fmt.Printf(&quot;\u952e\uff1a%s \u503c\uff1a%s\\n&quot;, key, value)<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c<code>key<\/code>\u548c<code>value<\/code>\u5206\u522b\u4ee3\u8868\u6620\u5c04\u4e2d\u7684\u952e\u548c\u503c\uff0c\u5141\u8bb8\u4f60\u5728\u5faa\u73af\u4e2d\u5904\u7406\u5b83\u4eec\u3002<\/p>\n<\/p>\n<p><h3>\u8fed\u4ee3\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n<p><p>\u8fed\u4ee3\u5b57\u7b26\u4e32\u65f6\uff0c<code>range<\/code>\u904d\u5386Unicode\u5b57\u7b26\u800c\u4e0d\u662f\u5b57\u8282\uff0c\u8fd9\u5bf9\u4e8e\u5904\u7406\u591a\u5b57\u8282\u5b57\u7b26\u96c6\u7684\u5b57\u7b26\u4e32\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-go\">for index, runeValue := range &quot;hello&quot; {<\/p>\n<p>    fmt.Printf(&quot;\u7d22\u5f15\uff1a%d \u503c\uff1a%U\\n&quot;, index, runeValue)<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8be5\u5faa\u73af\u663e\u793a\u5b57\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u7684\u7d22\u5f15\u548cUnicode\u4ee3\u7801\u70b9\uff0c\u5373\u4f7f\u662f\u591a\u5b57\u8282\u7684Unicode\u5b57\u7b26\u4e5f\u53ef\u4ee5\u6b63\u786e\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h2>\u4e09\u3001\u6ce8\u610f\u4e8b\u9879<\/h2>\n<\/p>\n<p><h3>\u4fee\u6539\u8fed\u4ee3\u7684\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528<code>range<\/code>\u8fdb\u884c\u8fed\u4ee3\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4e0d\u80fd\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15\u4fee\u6539\u8fed\u4ee3\u7684\u5143\u7d20\uff0c\u5982\u9700\u4fee\u6539\uff0c\u5e94\u8be5\u4f7f\u7528\u5143\u7d20\u7684\u6307\u9488\u6216\u5176\u4ed6\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u6027\u80fd\u8003\u8651<\/h3>\n<\/p>\n<p><p>\u867d\u7136<code>range<\/code>\u5f88\u65b9\u4fbf\uff0c\u4f46\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u5e94\u6ce8\u610f\u6027\u80fd\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u8fed\u4ee3\u5927\u578b\u6570\u636e\u7ed3\u6784\u65f6\u3002\u6709\u65f6\uff0c\u66f4\u7b80\u5355\u6216\u4e13\u7528\u7684\u8fed\u4ee3\u65b9\u5f0f\u53ef\u80fd\u66f4\u9ad8\u6548\u3002<\/p>\n<\/p>\n<p><h2>\u56db\u3001\u7ed3\u5408\u51fd\u6570\u4f7f\u7528<\/h2>\n<\/p>\n<p><p><code>range<\/code>\u8fd8\u53ef\u4ee5\u4e0eGo\u7684\u5176\u4ed6\u7279\u6027\u7ed3\u5408\u4f7f\u7528\uff0c\u6bd4\u5982\u95ed\u5305\uff08\u533f\u540d\u51fd\u6570\uff09\uff0c\u4ee5\u5b9e\u73b0\u66f4\u5f3a\u5927\u548c\u7075\u6d3b\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-go\">func process(nums []int) {<\/p>\n<p>    processFunc := func(index int, value int) {<\/p>\n<p>        \/\/ \u5728\u8fd9\u91cc\u5904\u7406\u6bcf\u4e2a\u5143\u7d20<\/p>\n<p>        fmt.Printf(&quot;\u5904\u7406\u7d22\u5f15\uff1a%d\uff0c\u503c\uff1a%d\\n&quot;, index, value)<\/p>\n<p>    }<\/p>\n<p>    for index, value := range nums {<\/p>\n<p>        processFunc(index, value)<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6837\u53ef\u4ee5\u5c06\u5904\u7406\u903b\u8f91\u5c01\u88c5\u5230\u4e00\u4e2a\u72ec\u7acb\u7684\u51fd\u6570\u4e2d\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316\u548c\u6613\u4e8e\u6d4b\u8bd5\u3002<\/p>\n<\/p>\n<p><p><strong>\u603b\u7ed3<\/strong>\uff1a<code>range<\/code>\u662fGo\u8bed\u8a00\u4e2d\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u548c\u7075\u6d3b\u7684\u5173\u952e\u5b57\uff0c\u5b83\u5141\u8bb8\u4f60\u4ee5\u7b80\u6d01\u7684\u65b9\u5f0f\u904d\u5386\u6570\u7ec4\u3001\u5207\u7247\u3001\u6620\u5c04\u548c\u5b57\u7b26\u4e32\u7684\u5143\u7d20\u3002\u901a\u8fc7\u83b7\u53d6\u7d22\u5f15\u548c\u503c\u3001\u4ec5\u83b7\u53d6\u503c\u7b49\u591a\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u4ee3\u7801\u65e2\u7b80\u6d01\u53c8\u5177\u6709\u8868\u73b0\u529b\u3002\u6b63\u786e\u5229\u7528<code>range<\/code>\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u6613\u8bfb\u7684Go\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728 Go \u7f16\u7a0b\u4e2d\u4f7f\u7528 range \u65b9\u6cd5\uff1f<\/strong><\/p>\n<p>Go \u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684 range \u65b9\u6cd5\u662f\u7528\u4e8e\u8fed\u4ee3\u6570\u7ec4\u3001\u5207\u7247\u3001\u5b57\u7b26\u4e32\u548c\u6620\u5c04\u7684\u5e38\u89c1\u65b9\u6cd5\u3002\u5b83\u7684\u8bed\u6cd5\u4e3a\uff1a<code>for index, value := range collection { }<\/code>\u3002\u5728\u5faa\u73af\u4e2d\uff0c\u6bcf\u6b21\u8fed\u4ee3\u90fd\u4f1a\u5c06\u7d22\u5f15\u548c\u5bf9\u5e94\u7684\u503c\u5206\u522b\u8d4b\u7ed9\u53d8\u91cfindex\u548cvalue\uff0c\u53ef\u4ee5\u5728\u5faa\u73af\u4f53\u5185\u4f7f\u7528\u8fd9\u4e9b\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u3002\u4f7f\u7528 range \u65b9\u6cd5\u53ef\u4ee5\u5faa\u73af\u5904\u7406\u5404\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-go\">numbers := []int{1, 2, 3, 4, 5}\n\nfor index, value := range numbers {\n    fmt.Println(&quot;\u7d22\u5f15:&quot;, index, &quot;\u503c:&quot;, value)\n}\n<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre><code>\u7d22\u5f15: 0 \u503c: 1\n\u7d22\u5f15: 1 \u503c: 2\n\u7d22\u5f15: 2 \u503c: 3\n\u7d22\u5f15: 3 \u503c: 4\n\u7d22\u5f15: 4 \u503c: 5\n<\/code><\/pre>\n<p><strong>2. range \u65b9\u6cd5\u5728 Go \u7f16\u7a0b\u4e2d\u5982\u4f55\u904d\u5386\u5b57\u7b26\u4e32\uff1f<\/strong><\/p>\n<p>\u5728 Go \u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 range \u65b9\u6cd5\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u3002\u5f53\u4f60\u4f7f\u7528 range \u65b9\u6cd5\u8fed\u4ee3\u5b57\u7b26\u4e32\u65f6\uff0c\u6bcf\u4e00\u6b21\u8fed\u4ee3\u7684value\u5c06\u662f\u4e00\u4e2arune\uff08Unicode\u7801\u70b9\uff09\u3002\u53ef\u4ee5\u5728\u5faa\u73af\u4f53\u5185\u4f7f\u7528\u8be5rune\u503c\u8fdb\u884c\u64cd\u4f5c\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-go\">str := &quot;Hello, \u4e16\u754c!&quot;\n\nfor index, char := range str {\n    fmt.Printf(&quot;\u7d22\u5f15: %d, \u5b57\u7b26: %c\\n&quot;, index, char)\n}\n<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre><code>\u7d22\u5f15: 0, \u5b57\u7b26: H\n\u7d22\u5f15: 1, \u5b57\u7b26: e\n\u7d22\u5f15: 2, \u5b57\u7b26: l\n\u7d22\u5f15: 3, \u5b57\u7b26: l\n\u7d22\u5f15: 4, \u5b57\u7b26: o\n\u7d22\u5f15: 5, \u5b57\u7b26:\n\u7d22\u5f15: 7, \u5b57\u7b26: \u4e16\n\u7d22\u5f15: 10, \u5b57\u7b26: \u754c\n\u7d22\u5f15: 13, \u5b57\u7b26: !\n<\/code><\/pre>\n<p><strong>3. range \u65b9\u6cd5\u9002\u7528\u4e8e\u54ea\u4e9b\u6570\u636e\u7ed3\u6784\u4ee5\u53ca\u9700\u8981\u6ce8\u610f\u4ec0\u4e48\uff1f<\/strong><\/p>\n<p>range \u65b9\u6cd5\u9002\u7528\u4e8e\u5faa\u73af\u904d\u5386\u5404\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5305\u62ec\u6570\u7ec4\u3001\u5207\u7247\u3001\u5b57\u7b26\u4e32\u548c\u6620\u5c04\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u65b9\u4fbf\u5730\u8bbf\u95ee\u6bcf\u4e2a\u5143\u7d20\u6216\u5b57\u7b26\uff0c\u5e76\u4e14\u65e0\u9700\u624b\u52a8\u7ba1\u7406\u7d22\u5f15\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5f53\u4f7f\u7528 range \u65b9\u6cd5\u8fed\u4ee3\u5207\u7247\u6216\u6570\u7ec4\u65f6\uff0c\u6bcf\u6b21\u5faa\u73af\u7684index\u5c06\u662f\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u800cvalue\u662f\u5143\u7d20\u7684\u526f\u672c\u3002\u5982\u679c\u5728\u5faa\u73af\u4f53\u5185\u5bf9value\u8fdb\u884c\u4fee\u6539\uff0c\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u7684\u5207\u7247\u6216\u6570\u7ec4\u5143\u7d20\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u539f\u59cb\u5143\u7d20\uff0c\u8bf7\u4f7f\u7528\u7d22\u5f15\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5f53\u4f7f\u7528 range \u65b9\u6cd5\u904d\u5386\u6620\u5c04\uff08map\uff09\u65f6\uff0c\u6bcf\u6b21\u5faa\u73af\u7684index\u662f\u952e\uff08key\uff09\uff0cvalue\u662f\u5bf9\u5e94\u7684\u503c\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u6620\u5c04\u662f\u65e0\u5e8f\u7684\uff0c\u904d\u5386\u7684\u987a\u5e8f\u4e0d\u662f\u56fa\u5b9a\u7684\u3002\u5982\u679c\u9700\u8981\u6309\u7279\u5b9a\u987a\u5e8f\u904d\u5386\u6620\u5c04\uff0c\u8bf7\u4f7f\u7528sort\u7b49\u65b9\u6cd5\u8fdb\u884c\u5904\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Go\u7f16\u7a0b\u4e2d\uff0crange\u662f\u4e00\u79cd\u5173\u952e\u5b57\uff0c\u7528\u4e8e\u8fed\u4ee3\u904d\u5386\u6570\u7ec4\u3001\u5207\u7247\u3001\u5b57\u7b26\u4e32\u6216\u8005\u6620\u5c04\u7684\u5143\u7d20\u3002\u5728\u4f7f\u7528\u4e0a\uff0c\u5b83\u975e\u5e38\u7075\u6d3b\u548c\u5f3a\u5927 [&hellip;]","protected":false},"author":3,"featured_media":310790,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/310773"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=310773"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/310773\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/310790"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=310773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=310773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=310773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}