{"id":10082,"date":"2024-03-14T10:32:51","date_gmt":"2024-03-14T10:32:51","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-range-function-in-go\/"},"modified":"2025-08-03T18:58:53","modified_gmt":"2025-08-03T18:58:53","slug":"how-to-use-the-range-function-in-go","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-range-function-in-go\/","title":{"rendered":"Go Range Function: Complete Guide"},"content":{"rendered":"<p>In Go language, the range keyword can be used to iterate over arrays, slices, channels, or maps. It allows you to loop through each element in a collection.<\/p>\n<p>Original: \u6211\u53bb\u5e74\u5728\u5df4\u9ece\u5b66\u4e60\u4e86\u6cd5\u8bed\u3002<br \/>\nParaphrased: Last year, I studied French in Paris.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">package<\/span> main\r\n\r\n<span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-string\">\"fmt\"<\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n\tnums := []<span class=\"hljs-type\">int<\/span>{<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>}\r\n\t\r\n\t<span class=\"hljs-comment\">\/\/ \u8fed\u4ee3\u5207\u7247<\/span>\r\n\t<span class=\"hljs-keyword\">for<\/span> index, value := <span class=\"hljs-keyword\">range<\/span> nums {\r\n\t\tfmt.Printf(<span class=\"hljs-string\">\"Index: %d, Value: %d\\n\"<\/span>, index, value)\r\n\t}\r\n\r\n\t<span class=\"hljs-comment\">\/\/ \u8fed\u4ee3map<\/span>\r\n\tages := <span class=\"hljs-keyword\">map<\/span>[<span class=\"hljs-type\">string<\/span>]<span class=\"hljs-type\">int<\/span>{\r\n\t\t<span class=\"hljs-string\">\"Alice\"<\/span>: <span class=\"hljs-number\">25<\/span>,\r\n\t\t<span class=\"hljs-string\">\"Bob\"<\/span>:   <span class=\"hljs-number\">30<\/span>,\r\n\t\t<span class=\"hljs-string\">\"Carol\"<\/span>: <span class=\"hljs-number\">35<\/span>,\r\n\t}\r\n\r\n\t<span class=\"hljs-keyword\">for<\/span> name, age := <span class=\"hljs-keyword\">range<\/span> ages {\r\n\t\tfmt.Printf(<span class=\"hljs-string\">\"Name: %s, Age: %d\\n\"<\/span>, name, age)\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>In the example above, we use range to iterate over a slice and a map, printing out their index and value respectively. You can also iterate over just the values without needing the index, like this:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u8fed\u4ee3\u5207\u7247\uff0c\u53ea\u83b7\u53d6\u503c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> _, value := <span class=\"hljs-keyword\">range<\/span> nums {\r\n\tfmt.Println(value)\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u8fed\u4ee3map\uff0c\u53ea\u83b7\u53d6\u503c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> _, age := <span class=\"hljs-keyword\">range<\/span> ages {\r\n\tfmt.Println(age)\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>In Go language, the range keyword can be used to iterate over arrays, slices, channels, or maps. It allows you to loop through each element in a collection. Original: \u6211\u53bb\u5e74\u5728\u5df4\u9ece\u5b66\u4e60\u4e86\u6cd5\u8bed\u3002 Paraphrased: Last year, I studied French in Paris. package main import &#8220;fmt&#8221; func main() { nums := []int{1, 2, 3, 4, 5} \/\/ \u8fed\u4ee3\u5207\u7247 for [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[12371,12370,4095,12372,10907],"class_list":["post-10082","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-go-iteration","tag-go-loops","tag-go-programming","tag-go-tutorial","tag-range-function"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Go Range Function: Complete Guide - Blog - 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