Go: Retrieve a string from between two characters or other strings

Question

Let\'s say for example that I have one string, like this:

Hello World!

What Go code would be able to extract Hel

Answer 1

I improved the Jan Kardaš`s answer. now you can find string with more than 1 character at the start and end.

func GetStringInBetweenTwoString(str string, startS string, endS string) (result string,found bool) {
    s := strings.Index(str, startS)
    if s == -1 {
        return result,false
    }
    newS := str[s+len(startS):]
    e := strings.Index(newS, endS)
    if e == -1 {
        return result,false
    }
    result = newS[:e]
    return result,true
}