在Golang中按长度拆分字符串

Question

Does anyone know how to split a string in Golang by length?

For example to split "helloworld" after every 3 characters, so it should ideally return an array of "hel" "low" "orl" "d"?

Alternatively a possible solution would be to also append a newline after every 3 characters..

All ideas are greatly appreciated!

Answer 1

Also needed a function to do this recently, see example usage here

func SplitSubN(s string, n int) []string {
    sub := ""
    subs := []string{}

    runes := bytes.Runes([]byte(s))
    l := len(runes)
    for i, r := range runes {
        sub = sub + string(r)
        if (i + 1) % n == 0 {
            subs = append(subs, sub)
            sub = ""
        } else if (i + 1) == l {
            subs = append(subs, sub)
        }
    }

    return subs
}