kyu8_exclusive_xor_logical_operator.go

// Exclusive "or" (xor) Logical Operator;
//
// Overview
// In some scripting languages like PHP, there exists a logical operator (e.g. &&, ||, and, or, etc.) called the
// "Exclusive Or" (hence the name of this Kata). The exclusive or evaluates two booleans. It then returns true if
// exactly one of the two expressions are true, false otherwise. For example:
//		false xor false == false // since both are false;
//		true xor false == true // exactly one of the two expressions are true;
//		false xor true == true // exactly one of the two expressions are true;
//		true xor true == false // Both are true.  "xor" only returns true if EXACTLY one of the two expressions
//							   // evaluate to true;
// 
// Task
// Since we cannot define keywords in Javascript (well, at least I don't know how to do it), your task is to define
// a function xor(a, b) where a and b are the two expressions to be evaluated. Your xor function should have the
// behaviour described above, returning true if exactly one of the two expressions evaluate to true, false otherwise;
//
// https://www.codewars.com/kata/56fa3c5ce4d45d2a52001b3c
//


package kata


func Xor(a, b bool) bool {
  result := (a || b) && !(a && b)
  return result
}