invalid operation: work[i] (type *[]bool does not support indexing)

[Игорь Мозговой]

Hello everybody. Could you help me? It's my code, and i have got error like in title. How I can to correct this code? Thank you!

func KeyManager (keys []string, work *[]bool, mu *sync.Mutex, remaining []int)(string, int, int){
   mu.Lock()
   for i:=0; i<len(keys);i++{
      if work[i] == false {
         work[i] = true
         mu.Unlock()
         return keys[i], remaining[i] , i
      }
   }
   return "false", -1, -1

}

[Ian Lance Taylor]

The parameter "work" has type "*[]bool", meaning that it is a pointer
to a []bool. When you write work[i] you are trying to index into a
pointer. That doesn't work. That is what the error message is
telling you. Either change work to []bool or change your code to use
(*work)[i].

Note that your function has other problems. You should range in the
loop. You should defer mu.Unlock--it doesn't unlock if the loop falls
through.

Ian

[Axel Wagner]

Hi,

why is work a *[]bool in the first place? You don't change the slice
(only it's contents). I don't think, it is necessary, to pass it by
pointer :)

You have two ways to fix this:
a) make work a []bool instead
b) change work[i] to (*work)[i]
I'd prefer a)

Best,

Axel