Reports parts of boolean expressions that are either always true, always false, or redundant. Such boolean expressions can be simplified, which may improve a readability of the code. In some cases, this also indicates a presence of other issues.

Example:

func isNonZero(x, y int) bool {
  // the second comparison is either always true
  // or not executed at all
  return x > 0 && x > 0
}

You can apply the Simplify expression quick-fix for the x > 0 && x > 0 part. After the quick-fix is applied, the expression looks as follows: x > 0.