将字符串切成字母

Question

How to slice one string in Go language into array of string letters it contains?

For example, turn string "abc" into array "a", "b", "c".

Answer 1

Use a conversion to runes, for example

package main

import "fmt"

func main() {
        s := "Hello, 世界"
        for i, r := range s {
                fmt.Printf("i%d r %c
", i, r)
        }
        fmt.Println("----")
        a := []rune(s)
        for i, r := range a {
                fmt.Printf("i%d r %c
", i, r)
        }
}

Playground

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Output:

i0 r H
i1 r e
i2 r l
i3 r l
i4 r o
i5 r ,
i6 r  
i7 r 世
i10 r 界
----
i0 r H
i1 r e
i2 r l
i3 r l
i4 r o
i5 r ,
i6 r  
i7 r 世
i8 r 界

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From the link:

Converting a value of a string type to a slice of runes type yields a slice containing the individual Unicode code points of the string. If the string is empty, the result is []rune(nil).