bertrandg

// Nothing changed here, works as previously. 
@Effect() actionX$ = this.updates$
    .ofType('ACTION_X')
    .map(toPayload)
    .switchMap(payload => this.api.callApiX(payload)
        .map(data => ({type: 'ACTION_X_SUCCESS', payload: data}))
        .catch(err => Observable.of({type: 'ACTION_X_FAIL', payload: err}))
    );

asher-dev

A Primer on Promises in ES6

(Post was originally written as a response to a question about how to resolve "callback hell" when asynchronous calls need to be executed sequentially.)

A popular system for managing sequential asynchronous operations, called "Promises", was integrated into ES6 (the latest release version of ECMAScript/Javascript). It's definitely a good idea to make sure you understand basic callbacks before diving into the Promises API, but it can really streamline asynchronous sequences once your callbacks start to get hellish.

It's based on an abstract data type called a "thenable". The basic premise is pretty simple -- a "promise" contains an operation that will be executed asynchronously, and has a .then() method which can be used to specify an operation to follow once the promise is fulfilled. You can create a new promise like this:

// Promise.new() creates a new promise.  It accepts a function as an argument.

nrollr

## Install NGINX
## when installing on Amazon Linux AMI, use:
$ sudo yum install nginx -y
## when installing on Amazon Linux 2 AMI, use
$ sudo amazon-linux-extras install nginx1.12 -y

## Install PHP and PHP-FPM
# for PHP version 7.1 use php71 and php71-fpm instead
$ sudo yum install php -y
$ sudo yum install php-fpm -y

zenorocha

Basic Auth

• New docs
• Old docs

Create account

New API

nepsilon

How to change your commit messages in Git?

At some point you’ll find yourself in a situation where you need edit a commit message. That commit might already be pushed or not, be the most recent or burried below 10 other commits, but fear not, git has your back 🙂.

Not pushed + most recent commit:

git commit --amend

This will open your $EDITOR and let you change the message. Continue with your usual git push origin master.

btroncone

Comprehensive Introduction to @ngrx/store

By: @BTroncone

Also check out my lesson @ngrx/store in 10 minutes on egghead.io!

Update: Non-middleware examples have been updated to ngrx/store v2. More coming soon!

Table of Contents

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

jareware

⇐ back to the gist-blog at jrw.fi

Advanced SCSS

Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.

I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.

This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso

yrezgui

var bb, reader;

var meta = {
	"title": "mozilla.png",
	"mimeType": "image/png",
	"description": "Mozilla Official logo"
};

var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://developer.mozilla.org/media/img/mdn-logo-sm.png', true);

mitchallen

PREREQUISITES

This assumes that you have already experimented with creating instances under EC2 and know 
how to use ssh keys to access an instance.  If not, try experimenting with that first and 
setup some keys.

This also assume that you have a Security Group with Port 80 available.  If not, experiment 
with creating one of those as well.

CREATE A NEW INSTANCE