Axighi

// Definition for a binary tree node.
function TreeNode(val, left, right) {
  this.val = val === undefined ? 0 : val;
  this.left = left === undefined ? null : left;
  this.right = right === undefined ? null : right;
}

/**
 * @param {Array<Number>} nodes
 * @return {null | TreeNode}

Axighi

export default class Timer {
  constructor(time = 10, cb = () => console.log('null callback')) {
    this.time = time
    this.cb = cb
    this.remain = time * 1000
  }

  start() {
    this.startTime = new Date()
    this.remain = this.time * 1000

Axighi

function futch(url, opts={}, onProgress) {
    return new Promise( (res, rej)=>{
        var xhr = new XMLHttpRequest();
        xhr.open(opts.method || 'get', url);
        for (var k in opts.headers||{})
            xhr.setRequestHeader(k, opts.headers[k]);
        xhr.onload = e => res(e.target.responseText);
        xhr.onerror = rej;
        if (xhr.upload && onProgress)
            xhr.upload.onprogress = onProgress; // event.loaded / event.total * 100 ; //event.lengthComputable

Axighi

'An aplle is not a banana'.replace(/a/g, (() => {
  var number = 0;
  return () => {
    return number++;
  }
})())

Axighi

navigator.sayswho= (function(){
    var ua= navigator.userAgent, tem, 
    M= ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
    if(/trident/i.test(M[1])){
        tem=  /\brv[ :]+(\d+)/g.exec(ua) || [];
        return 'IE '+(tem[1] || '');
    }
    if(M[1]=== 'Chrome'){
        tem= ua.match(/\b(OPR|Edge)\/(\d+)/);
        if(tem!= null) return tem.slice(1).join(' ').replace('OPR', 'Opera');

Axighi

Function.prototype.curry = function() {
    if (arguments.length < 1) {
        return this;
    }

    const self = this;
    const args = toArray(arguments);

    return function() {
        return self.apply(this, args.concat(toArray(arguments)));

Axighi

var CustomObject = function () {
    var _this = this;
    _this.events = {};

    _this.addEventListener = function(name, handler) {
        if (_this.events.hasOwnProperty(name))
            _this.events[name].push(handler);
        else
            _this.events[name] = [handler];
    };

Axighi

# Definition for singly-linked list.
class ListNode(object):
    def __init__(self, x):
        self.val = x
        self.next = None

class Solution(object):
    def addTwoNumbers(self, l1, l2):
        """
        :type l1: ListNode

Axighi

var req = require.context("../someDir", true, /^(.*\.(js$))[^.]*$/igm);
req.keys().forEach(function(key){
    req(key);
});

Axighi

const cachedFetch = (url, options) => {
  let expiry = 5 * 60 // 5 min default
  if (typeof options === 'number') {
    expiry = options
    options = undefined
  } else if (typeof options === 'object') {
    // I hope you didn't set it to 0 seconds
    expiry = options.seconds || expiry
  }
  // Use the URL as the cache key to sessionStorage