Arjunkumar tk120404

## api-cheatsheet-array.md

      
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                tk120404
                / api-cheatsheet-array.md
            
            
              Created
              April 3, 2018 03:27
                — forked from rauschma/api-cheatsheet-array.md
            
          
    Array<T>

Legend:

✏️ method changes this.
🔒 method does not change this.

Array<T>.prototype.*:

concat(...items: Array: T[] 🔒 ^ES3


## memory-leaks.md

      
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                tk120404
                / memory-leaks.md
            
            
              Created
              February 6, 2018 03:43
                — forked from kepta/memory-leaks.md
            
          
    In this article I will take a very simplistic approach in understanding memory leaks and I will also attempt to diagnose them.
In todays world of abundant memory, we seldom worry about memory leakages. But I hate to tell you that we live in a real world and nothing comes for free.
Oh my fancy functional programming

Disclosure: I absolutely love functional programming.
Functional programming is cool and with the new ES6 syntax it becomes even cooler.


## nginx-websocket-proxy.conf
upstream websocket {
    server localhost:3000;
}

server {
    listen       80;
    server_name  localhost;

    access_log  /var/log/nginx/websocket.access.log  main;

## decimalAdjust.js
function decimalAdjust(value)
{
   value = value.toString().split('e');
	 value = Math.round(+(value[0] + 'e' + (value[1] ? (+value[1] + 2) : 2)));
   value = value.toString().split('e');
   return +(value[0] + 'e' + (value[1] ? (+value[1] - 2) : -2));
}

## linkedlist.js
    var LinkedList = function()
    {
        this._head = this._tail = null;
        this._transverse = null;
        this._size = 0;
    }

    function QEntry(prev, obj, next)
    {
        if (typeof obj === 'undefined' || obj === null) {

## india.js
  var a,b=0,c=10,qwer ="TFy!QJu ROo TNn(ROo)SLq SLq ULo+UHs UJq TNn*RPn/QPbEWS_JSWQAIJO^NBELPeHBFHT}TnALVlBLOFAkHFOuFETpHCStHAUFAgcEAelclcn^r^r\\tZvYxXyT|S~Pn SPm SOn TNn ULo0ULo#ULo-WHq!WFs XDt!";
  while ((a = qwer.charCodeAt(b++)) != 0) {
        while (a-- > 64) {
          require('sys').print( ++c==90 ? String.fromCharCode(c = c/ 9):String.fromCharCode(33^b&1));
        }
   }
   //Source : http://codepad.org/ngiITeZ4

## jsfoo_firstday.txt

*Handling performance for Progressive Web Apps at scale: Flipkart
PRPL
<link rel="preload">
https://developers.google.com/web/updates/2016/03/link-rel-preload?hl=en
requestAnimationFrame(function(){
performance.mark('first paint')});
https://developers.google.com/web/fundamentals/performance/critical-rendering-path/analyzing-crp?hl=en

First slide: tiny.cc/nxtgen

## property.js
var a = {};

console.log(a);

Object {}

a.name = 'Object';

Object.prototype.name = 'Object';

## v.js
Got "v" from here

http://discogscounter.getfreehosting.co.uk/js-noalnum.php

(+(+[])+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[!+[]+!+[]+!+[]+[+[]]]

http://stackoverflow.com/questions/2343557/in-javascript

## Answer
db.grades.aggregate({ $match : { score : { $gte : 65 }, type:'exam' }}, { $group:{_id:'$student_id',count:{$sum: 1}, score :{ $min:'$score'}}}, {'$sort':{'score':1}}, {'$limit':1});

Mongo Aggregration example http://docs.mongodb.org/manual/tutorial/aggregation-examples/
http://docs.mongodb.org/manual/reference/aggregation/match/
	upstream websocket {
	server localhost:3000;
	}

	server {
	listen 80;
	server_name localhost;

	access_log /var/log/nginx/websocket.access.log main;
	function decimalAdjust(value)
	{
	value = value.toString().split('e');
	value = Math.round(+(value[0] + 'e' + (value[1] ? (+value[1] + 2) : 2)));
	value = value.toString().split('e');
	return +(value[0] + 'e' + (value[1] ? (+value[1] - 2) : -2));
	}
	var LinkedList = function()
	{
	this._head = this._tail = null;
	this._transverse = null;
	this._size = 0;
	}

	function QEntry(prev, obj, next)
	{
	if (typeof obj === 'undefined' \|\| obj === null) {
	var a,b=0,c=10,qwer ="TFy!QJu ROo TNn(ROo)SLq SLq ULo+UHs UJq TNn*RPn/QPbEWS_JSWQAIJO^NBELPeHBFHT}TnALVlBLOFAkHFOuFETpHCStHAUFAgcEAelclcn^r^r\\tZvYxXyT\|S~Pn SPm SOn TNn ULo0ULo#ULo-WHq!WFs XDt!";
	while ((a = qwer.charCodeAt(b++)) != 0) {
	while (a-- > 64) {
	require('sys').print( ++c==90 ? String.fromCharCode(c = c/ 9):String.fromCharCode(33^b&1));
	}
	}
	//Source : http://codepad.org/ngiITeZ4

	*Handling performance for Progressive Web Apps at scale: Flipkart
	PRPL
	<link rel="preload">
	https://developers.google.com/web/updates/2016/03/link-rel-preload?hl=en
	requestAnimationFrame(function(){
	performance.mark('first paint')});
	https://developers.google.com/web/fundamentals/performance/critical-rendering-path/analyzing-crp?hl=en

	First slide: tiny.cc/nxtgen
	var a = {};

	console.log(a);

	Object {}

	a.name = 'Object';

	Object.prototype.name = 'Object';
	Got "v" from here

	http://discogscounter.getfreehosting.co.uk/js-noalnum.php

	(+(+[])+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[!+[]+!+[]+!+[]+[+[]]]

	http://stackoverflow.com/questions/2343557/in-javascript
	db.grades.aggregate({ $match : { score : { $gte : 65 }, type:'exam' }}, { $group:{_id:'$student_id',count:{$sum: 1}, score :{ $min:'$score'}}}, {'$sort':{'score':1}}, {'$limit':1});

	Mongo Aggregration example http://docs.mongodb.org/manual/tutorial/aggregation-examples/
	http://docs.mongodb.org/manual/reference/aggregation/match/