ECMAScript

The sixth version of ECMAScript (called ES6 or ES2015) has now been finalized and we'll be taking advantage of the new features+syntax available. Since not all browsers support the new standard (yet) we'll be using Babel as a transpiler. This allows us to write future-proof code, that will still work today.

Learn ES2015: http://babeljs.io/docs/learn-es2015/
Building modular javascript applications in es6 with React, Webpack, and Babel: https://medium.com/@yamalight/building-modular-javascript-applications-in-es6-with-react-webpack-and-babel-538189cd485f
ESLint docs: http://eslint.org/docs/user-guide/configuring
List of ES6 posts by Nicholas Zakas: http://www.nczonline.net/blog/tag/ecmascript-6/
Understanding ES6 (online book): https://leanpub.com/understandinges6/read

React

Diagnosing Redis errors on the client side

Customers periodically ask "Why am I getting errors when talking to Redis". The answer is complicated - it could be a client or server side problem. In this article, I am going to talk about client side issues. For server side issues, see here

Clients can see connectivity issues or timeouts for several reason, here are some of the common ones I see:

Memory pressure

FWIW: I didn't produce the content present here. I've just copy-pasted it from somewhere over the Internet, but I cannot remember exactly the original source. I was also not able to find the author's name, so I cannot give him/her the proper credit.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

FFmpeg Cheat Sheet for 360º video

Brought to you by Headjack

FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.

Let's start with some basics:

ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file

	//: Playground - noun: a place where people can play

	import UIKit

	// This is for dmoe, you can use a generice type to limit your observer to an UIViewController for common usage.
	protocol Notifiable {
	var name: Notification.Name { get }
	func observe(by observer: Any, withSelector selector: Selector, object: Any?)
	func post(object: Any? ,userInfo: [AnyHashable: Any]?)
	static func remove(observer: Any)

	/*
	To double check aes.js, I wrote the same thing in go.
	Because of standards, we should be able to encrypt in js
	and decrypt in go. Seems to work fine, with some odd padding.
	*/

	package main

	import (
	"crypto/aes"

	DROP TABLE currency;

	-- Create table variable
	CREATE TABLE currency (
	name VARCHAR(100),
	code VARCHAR(100),
	symbol VARCHAR(100)
	);

	-- Insert currency records

	import argparse
	import os
	import shutil
	import time

	import torch
	import torch.nn as nn
	import torch.nn.parallel
	import torch.backends.cudnn as cudnn
	import torch.optim

	# This is an example for the CIFAR-10 dataset.
	# There's a function for creating a train and validation iterator.
	# There's also a function for creating a test iterator.
	# Inspired by https://discuss.pytorch.org/t/feedback-on-pytorch-for-kaggle-competitions/2252/4

	from utils import plot_images

	def get_train_valid_loader(data_dir,
	batch_size,
	augment,

	<div class="calendar">
	<div class="calendar-navs">
	<div class="month-nav">
	<button (click)="prevMonth()"><</button>
	<span class="p4">{{ currentDate.format('MMMM') }}</span>
	<button (click)="nextMonth()">></button>
	</div>
	<div class="year-nav">
	<button (click)="prevYear()"><</button>
	<span>{{ currentDate.format('YYYY') }}</span>