Dmitry painkkiller

By the way, I'm available for tutoring and code review :)

What Promises library should I use?
How do I create a Promise myself?
How do I use new Promise?
How do I resolve a Promise?
But what if I want to resolve a synchronous result or error?
[But what if it's at the start of a chain, and I'm not in a .then callback yet?](https://gist.github.com/joepie91/4c3a10629a4263a522e3bc4839a28c83#6-but

[02:06 PM] acemarke: @Steven : a couple other thoughts on the whole NODE_ENV thing. First, per my comments, it really is a Node concept. It's a system environment variable that Node exposes to your application, and apparently the Express web server library popularized using its value to determine whether to do optimizations or not
[02:08 PM] acemarke: Second, because of its use within the Node ecosystem, web-focused libraries also started using it to determine whether to they were being run in a "development" environment vs a "production" environment, with corresponding optimizations. For example, React uses that as the equivalent of a C #ifdef to act as conditional checking for debug logging and perf tracking. If process.env.NODE_ENV is set to "production", all those if clauses will evaluate to false.
Third, in conjunction with a tool like UglifyJS that does minification and removal of dead code blocks, a clause that is surrounded with if(process.env.NODE_ENV !== "development")

Why I hate TypeScript

Warning: These views are highly oppinated and might have some slightly incorrect facts. My experience with typescript was about 2 weeks in Node and a week in angular2.

Not Standard

TypeScript is implementing their own take on JavaScript. Some of the things they are writing will likely never make it in an official ES* spec either.

Technologies that have competing spec / community driven development have a history of failing; take: Flash, SilverLight, CoffeeScript, the list goes on. If you have a large code base, picking TypeScript is something your going to be living with for a long time. I can take a bet in 3 years JavaScript will still be around without a doubt.

Its also worth noting that they have built some things like module system and as soon as the spec came out they ditched it and started using that. Have fun updating!

	const express = require('express');

	const app = express();

	app.post('/file', (req, res, next) => {
	let first = true;

	req.on('data', chunk => {
	if (!first) {
	return;

	/**
	* MerkleTree Implementation
	* @version 1.0.0
	* @author Ronny Amarante <me@amaranter.com>
	*/

	var SHA256 = require("crypto-js/sha256");

	function MerkleTree(transactions) {
	this.transactions = transactions;

	<?xml version="1.0" encoding="utf-8" standalone="no"?>
	<application xmlns="http://ns.adobe.com/air/application/[airVersionPattern]">
	<filename>[fileNamePattern]</filename>
	<id>[packagePattern]</id>
	<name>[namePattern]</name>
	<versionNumber>[versionNumberPattern]</versionNumber>
	<versionLabel>[versionLabelPattern]</versionLabel>

	<initialWindow>
	<content>[This value will be overwritten by Flash Builder in the output app.xml]</content>

	# Load the raw training data and replace missing values with NA
	training.data.raw <- read.csv('train.csv',header=T,na.strings=c(""))

	# Output the number of missing values for each column
	sapply(training.data.raw,function(x) sum(is.na(x)))

	# Quick check for how many different values for each feature
	sapply(training.data.raw, function(x) length(unique(x)))

	# A visual way to check for missing data

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote

	var PIXI = require('pixi.js')
	console.log(PIXI)

Dmitry painkkiller

Table of contents

Why I hate TypeScript

Not Standard