Pointers in Go

Question

I’m trying to change a String in Go using pointers, but I get one

invalid operation: oculta[i] (type *string does not support indexing)

The function I’m performing the change.

func verifica(palavra, chute string, oculta *string) {
    for i, l := range palavra {
        if string(l) == chute {
            *oculta[i] = chute
        } 
    }
}

Answer 1

about string: go strings are imutaveis, that is taking specific methods for the string type it n can be modified, unless something is assigned to it altogether

pointers: to avoid ambiguities the way to access a pointer with the use of indices is (*ptr)[i]

by which I understood the code, you want to assign the letter of the kick in the occult, as you cannot manipulate the input of the string directly to assign (to access in a print for example, can), that aq would be a solution to what I believe is the purpose of this function

func verifica(palavra, chute string, nome *string) {
    for _, l := range palavra {
        if string(l) == chute {
            *nome = *nome + chute
        } else {
            *nome = *nome + "_"
        }
    }
}

to use indices the solution I think would be to use Slice byte(byte is kind of golang char)

func verifica(palavra, chute string, nome []byte) {
    for i, l := range palavra {
        if string(l) == chute {
            nome[i] = byte(chute[0])
        } else {
            nome[i] = byte("_"[0])
        }
    }
}

Slice is a pointer, so n needs to receive with *and nor command with &, the only thing is that before sending it he has to create it the size he will use, before this function is called

nome := make([]byte, len(palavra))

of to use Slice with append tb