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ABHINAV SHARMA sharmaabhinav

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var re = /\{\d\}/
var str = 'My name is {0} . My location is {1}. My country is {2}'
function formatter (str) {
var params = Array.prototype.splice.call(arguments, 1)
for(var i=0;i<params.length;i++){
str = str.replace(re, params[i])
}
return str
<!DOCTYPE html>
<html>
<head>
<style>
div {
display: inline-block;
width: 200px;
border:1px solid;
box-sizing: border-box;
margin: 1px 0px;
const union = (arr1, arr2) => utility.uniq([...arr1, ...arr2])
var utility = {union, uniq}
function uniq (arr) {
var elemMap = {}
for(var val of arr){
elemMap[val] = elemMap[val] ? elemMap[val] += 1 : 1
}
return Object.keys(elemMap).map(function (key) {
return Number(key)
function debounce(fn, delay) {
var timer = null
return function () {
var args = arguments
clearTimeout(timer)
timer = setTimeout(function () {
fn.apply(null, args)
}, delay)
}
}
function apply (fn, context, params) {
return fn.call(context, ...params)
}
var obj = {a: 2}
function foo (b,c,d) {
console.log(this.a, b, c, d)
}
function isRelatedTo (o1, o2) {
function F() {}
F.prototype = o2
return o1 instanceof F
}
if (!Object.create) {
Object.create = function(o) {
function F(){}
F.prototype = o;
var Something = {
cool: function() {
this.greeting = "Hello World";
this.count = this.count ? this.count + 1 : 1;
}
};
Something.cool();
console.log(Something.greeting)
console.log(Something.count);
var _ = {pick}
function pick (object, identifierStr) {
var path = identifierStr.split('.')
if (path.length === 1 ) {
return object[path[0]]
}
var [first, ...rest] = path
return pick(object[first], rest.join('.'))
}
function head (arr) {
var [start, ...rest] = arr;
return start;
}
function tail (arr) {
var [start, ...rest] = arr;
return rest;
}
function groupBy (collection, func, callback) {
if (typeof func !== 'function') {
callback('please provide a function to group by')
return
}
if (typeof callback !== 'function') {
callback('please provide a function as a callback')
return
}