# V8021\. Using a unary operator several times is meaningless or reverses the result\.

The analyzer has detected that a unary operator \(\!, ^, \-, or \+\) is used twice in a row in the same expression\. Using the operator \+ multiple times is redundant\. In the case of other operators, doing so cancels the effect of the first use\.

The example:

```cpp
func foo() { 
  ....
  for _, u := range users { 
    if !(!hideInactive) && !u.IsActive { 
      continue 
    }
    ....
  }
}
```

The `!` operator is applied twice to the `hideInactive` variable, which is equivalent to not using negation at all\. Such an error may occur due to a typo when placing parentheses in the condition\.

The fixed code:

```cpp
if !(!hideInactive && !u.IsActive) { 
  continue 
}
```