Phongs phongsakornp

The Problem

In Javascript this is bound in unexpected ways. Functions, in particular, create a new 'this' and so when you want to keep a reference to an "outer" object you sometimes see the pattern:

var self = this;

as in:

var self = this;

Whether you're trying to give back to the open source community or collaborating on your own projects, knowing how to properly fork and generate pull requests is essential. Unfortunately, it's quite easy to make mistakes or not know what you should do when you're initially learning the process. I know that I certainly had considerable initial trouble with it, and I found a lot of the information on GitHub and around the internet to be rather piecemeal and incomplete - part of the process described here, another there, common hangups in a different place, and so on.

In an attempt to coallate this information for myself and others, this short tutorial is what I've found to be fairly standard procedure for creating a fork, doing your work, issuing a pull request, and merging that pull request back into the original project.

Creating a Fork

Just head over to the GitHub page and click the "Fork" button. It's just that simple. Once you've done that, you can use your favorite git client to clone your repo or j

	#!/bin/sh

	# Make sure to:
	# 1) Name this file `backup.sh` and place it in /home/ubuntu
	# 2) Run sudo apt-get install awscli to install the AWSCLI
	# 3) Run aws configure (enter s3-authorized IAM user and specify region)
	# 4) Fill in DB host + name
	# 5) Create S3 bucket for the backups and fill it in below (set a lifecycle rule to expire files older than X days in the bucket)
	# 6) Run chmod +x backup.sh
	# 7) Test it out via ./backup.sh


	/*
	##Device = Desktops
	##Screen = 1281px to higher resolution desktops
	*/

	@media (min-width: 1281px) {

	/* CSS */

	/**
	* This code is licensed under the terms of the MIT license
	*
	* Deep diff between two object, using lodash
	* @param {Object} object Object compared
	* @param {Object} base Object to compare with
	* @return {Object} Return a new object who represent the diff
	*/
	function difference(object, base) {
	function changes(object, base) {

	class Foo {
	constructor(x,y,z) {
	Object.assign(this,{ x, y, z });
	}

	hello() {
	console.log(this.x + this.y + this.z);
	}
	}

	// https://codepen.io/hartzis/pen/VvNGZP
	class ImageUpload extends Component {
	constructor(props) {
	super(props);
	this.state = {
	file: '',
	imagePreviewUrl: ''
	};
	this._handleImageChange = this._handleImageChange.bind(this);
	this._handleSubmit = this._handleSubmit.bind(this);

	//equivalent of MySQL SELECT COUNT(*) AS cnt, fieldName FROM someTable GROUP BY fieldName;
	db.someCollection.aggregate([{"$group" : {_id:"$fieldName", cnt:{$sum:1}}}]);

	//as above but ordered by the count descending
	//eg: SELECT COUNT(*) AS cnt, fieldName FROM someTable GROUP BY fieldName ORDER BY cnt DESC;
	db.someCollection.aggregate([{"$group" : {_id:"$fieldName", cnt:{$sum:1}}}, {$sort:{'cnt':-1}}]);

	# AWS Version 4 signing example
	# taken from:
	# http://docs.aws.amazon.com/general/latest/gr/sigv4-signed-request-examples.html

	# Lambda API (InvokeAsync)
	# http://docs.aws.amazon.com/lambda/latest/dg/API_InvokeAsync.html

	# See: http://docs.aws.amazon.com/general/latest/gr/sigv4_signing.html
	# This version makes a POST request and passes request parameters
	# in the body (payload) of the request. Auth information is passed in

	import Foundation

	// MARK: - Comparable

	extension NSDecimalNumber: Comparable {}

	public func ==(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> Bool {
	return lhs.compare(rhs) == .OrderedSame
	}