{"id":11024,"date":"2024-03-14T13:14:39","date_gmt":"2024-03-14T13:14:39","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-of-iteration-using-range-in-golang\/"},"modified":"2025-08-04T06:42:19","modified_gmt":"2025-08-04T06:42:19","slug":"what-is-the-method-of-iteration-using-range-in-golang","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-of-iteration-using-range-in-golang\/","title":{"rendered":"Golang Range: The Complete Guide to Iteration"},"content":{"rendered":"

In Golang, the range keyword can be used to iterate over data structures such as arrays, slices, maps, and channels.\u5177\u9ad4\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. Iterating through arrays and slices:<\/li>\n<\/ol>\n
    arr := []int<\/span>{1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\r\nfor<\/span> idx, val := range<\/span> arr {\r\n    fmt.Printf(\"Index: %d, Value: %d\\n\"<\/span>, idx, val)\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Iterative mapping:<\/li>\n<\/ol>\n
      m := map<\/span>[string<\/span>]int<\/span>{\"a\"<\/span>: 1<\/span>, \"b\"<\/span>: 2<\/span>, \"c\"<\/span>: 3<\/span>}\r\nfor<\/span> key, val := range<\/span> m {\r\n    fmt.Printf(\"Key: %s, Value: %d\\n\"<\/span>, key, val)\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Iterative channel.<\/li>\n<\/ol>\n
        ch := make<\/span>(chan<\/span> int<\/span>)\r\ngo<\/span> func<\/span>()<\/span><\/span> {\r\n    ch <- 1<\/span>\r\n    ch <- 2<\/span>\r\n    ch <- 3<\/span>\r\n    close<\/span>(ch)\r\n}()\r\n\r\nfor<\/span> val := range<\/span> ch {\r\n    fmt.Println(val)\r\n}\r\n<\/code><\/pre>\n
        During the iteration process, the range keyword will return two values, which are the index (or key) and the corresponding value. You can choose to use a variable to receive one of the values, or use an underscore _ to discard the value that is not needed.<\/p>\n","protected":false},"excerpt":{"rendered":"
        In Golang, the range keyword can be used to iterate over data structures such as arrays, slices, maps, and channels.\u5177\u9ad4\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a Iterating through arrays and slices: arr := []int{1, 2, 3, 4, 5} for idx, val := range arr { fmt.Printf(“Index: %d, Value: %d\\n”, idx, val) } Iterative mapping: m := map[string]int{“a”: 1, “b”: 2, “c”: […]<\/p>\n","protected":false},"author":7,"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":[12370,4095,14054,14052,14053],"class_list":["post-11024","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-go-loops","tag-go-programming","tag-golang-basics","tag-golang-range","tag-iteration-in-go"],"yoast_head":"\nGolang Range: The Complete Guide to Iteration - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use the range keyword in Golang for iterating over arrays, slices, maps, and channels with practical examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-method-of-iteration-using-range-in-golang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Golang Range: The Complete Guide to Iteration\" \/>\n<meta property=\"og:description\" content=\"Learn how to use the range keyword in Golang for iterating over arrays, slices, maps, and channels with practical examples.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-is-the-method-of-iteration-using-range-in-golang\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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