Go modify the string of characters (Chinese garbled)

Reproduce the problem: Modify the string first Chinese

First make a slice of the original string, and then spliced ​​to obtain a new string

func ModifyString(str string) string {
    tempStr := str[1:]
    str = "大" + tempStr
    return str
}

func main(){
    ret := ModifyString("你好世界")
    fmt.Println(ret)
}

running result:

Great world

Sections are cut according to the default byte, 3 byte in Chinese composition, resulting in the residue of the above two extra byte

 

Solution:

So when specified under sections 3 byte try:

func ModifyString(str string) string {
    tempStr := str[3:]
    str = "大" + tempStr
    return str
}

running result:

Great world

 

Another way:

step:

1. Becomes first string array of characters
2. Then by changing the index value corresponding to an array
3. The array is then transferred to a new string

func ModifyString(str string) string {
    strArray := []rune(str)

    strArray[0] = '大'

    str = string(strArray)

    return str
}

running result:

Great world