UUID = (function() {
  const chunk = (len) => Array(len).fill().map(()=>chars[_rng()]).join('')
  const chars = 'abcdefghijklmnopqrstuvwxyz1234567890'.split('');
      let map = function(num, in_min, in_max, out_min, out_max) {
        return (num - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
      }
      let _rnds8 = new Uint8Array(1);
      let _rng = function() {
        window.crypto.getRandomValues(_rnds8);
        return Math.floor(map(_rnds8[0], 0, 256, 0, 62));
      }

import tkinter as tk

root = tk.Tk()

label = tk.Label(root, text='Hello, World!')
label.pack()

root.mainloop()

let numberOfTrues = 0;
for (let i = 0; i < arr.length; i++) {
  if arr[i] { numberOfTrues ++; }
}
return i === 1;

XtraUtils.Array.addUtil('one', (function(){
  const _xor = (a, b) => !a ^ !b;
  function one(fn) {
    let res = false;
    this.forEach(function(item, value, arr) {
      res = _xor(fn(item, value, arr), res)
    })
  }
  return one;
})());

  XtraUtils.Array.addUtil('one', (function(){
    const _xor = (a, b) => !a ^ !b;
    function one(fn) {
      return this.map(fn).reduce((ret, merger) => _xor(ret, merger), false)
    }
    return one;
  })());

  XtraUtils.Array.addUtil('one', (function(){
    const _xor = (a, b) => !a ^ !b;
    function one(fn) {
      return Boolean(this.map(fn).reduce((ret, merger) => _xor(ret, merger), 0))
    }
    return one;
  })());

[1,2].one((item)=>{ return item > 1 }); // true
[1,2].one((item)=>{ return item > 0 }); // false
[1,2].one((item)=>{ return item > 2 }); // false

 Array.prototype.one = (function(){
    const _xor = (a, b) => !a ^ !b;
    function one(fn) {
      return Boolean(this.map(fn).reduce((ret, merger) => _xor(ret, merger), 0))
    }
    return one;
  })()

  XtraUtils.Boolean.addMethod('xor', (function() {
    function xor( a, b ) {
      return Boolean(!a ^ !b);
    }
  })());

  XtraUtils.Boolean.addMethod('xorMulti', (function(){
    const _xor = (a,b)=>!a^!b;
    return function xorMulti(...args) {
      return Boolean(args.reduce(_xor, 0))
    }
  })());

let obj = {
  [Symbol.toStringTag]: 'Tehehe'
}