Go For Range

by Online Tutorials Library July 14, 2022

Go for range construct

The for range construct is useful in many context. It can be used to traverse every item in a collection. It is similar to foreach in other languages. But, we still have the index at each iteration in for range construct.

Syntax:

Go For Range Example

  import “fmt”  func main() {     nums := []int{2, 3, 4}     sum := 0     for _, value := range nums {// “_ ” is to ignore the index        sum += value     }     fmt.Println(“sum:”, sum)     for i, num := range nums {        if num == 3 {           fmt.Println(“index:”, I)        }     }     kvs := map[string]string{“1″:”mango”,”2″:”apple”,”3″:”banana”}     for k, v := range kvs {        fmt.Printf(“%s -> %sn”, k, v)     }     for k := range kvs {        fmt.Println(“key:”, k)     }     for i, c := range “Hi” {        fmt.Println(i, c)     }  }  

Output:

sum: 60  1 -> mango  2 -> apple  3 -> banana  key: 1  key: 2  key: 3  0 72  1 105

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Go For Range

Go for range construct

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