XOR function in JavaScript

xor.js

// 5 May 2020
// XOR - because I keep forgetting what it means ("exclusive OR").
// It compares 2 primitive values and returns true if only one is true,
// otherwise returns false.

// Could be more robust (reject Object comparisons, e.g.).

function XOR(a, b) {
  return !a !== !b
}

/* test it out */

var tests = [
  [1, 0],
  [true, false],
  [0, 0],
  [1, -1]
].map(function(pair) {
  return XOR.apply(0, pair);
});

console.log(JSON.stringify(tests, null, 2));

/*
[
  true,
  true,
  false,
  false
]
*/