s15o sawthinkar

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Instachat

The Phoenix Framework was built with realtime communication as a first class priority. Using its built in socket handling and channels we can implement a basic, realtime chat application with little effort.

For this video we’re going to assume that you already have Elixir and Phoenix Setup. You will not need a database as the messages will not be persisted. This tutorial is taken pretty much directly from the Phoenix Documentation.

Setting up the app

To start let’s generate a standard phoenix application:

$> mix phoenix.new instachat

Elixir Resources

Resource Lists
- Awesome Elixir Resource List https://github.com/h4cc/awesome-elixir
- Elixir Talks https://github.com/elixir-lang/elixir/wiki/Talks
- Phoenix Framework http://www.phoenixframework.org/
- Elixir Official Site http://elixir-lang.org/

Hopefully this may speed your groking of the forking torturing Y Combinator a little bit.

Disclaimer: I don't assert what I say here is accurate, or even correct (I'm not authorative, obviously), but it's my understanding and I'm sharing in the hope that someone who also struggles on the Y Combinator may benefit a tad.

Prerequisite Understandings

In Lambda Caculus, everything is a Lambda Caculus (Anonymous function that takes one parameter). And the best thing is that, ... drump roll ..., it's Turing Complete. So theoretically, it can caculate anything a computer can.
In this note, I use the term function, which (I think) means Lambda Caculus, to sound (at least to myself) more accustomed.

The definition of Y Combinator

Y = λf.(λx.f (x x)) (λx.f (x x))

Elixir Notes

Misc notes

String concatenation:

How to add a collapsible section in markdown

1. Example

Click me

Heading

Foo
Bar
- Baz

Qux

	// Basic Operators
	35 + 98
	62 - 14
	50 / 10
	463 * 173


	// Types
	var age: Int = 21 // Int = Integer = Any whole number
	var milesCanRun: Double = 0.75 // Double = Float = Decimal Number

	<html>
	<body>
	<h2>Privacy Policy</h2>
	<p>[Individual or Company Name] built the [App Name] app as a [open source \| free \| freemium \| ad-supported \| commercial] app. This SERVICE is provided by [Individual or company name] [at no cost] and is intended
	for use as is.</p>
	<p>This page is used to inform website visitors regarding [my\|our] policies with the collection, use, and
	disclosure of Personal Information if anyone decided to use [my\|our] Service.</p>
	<p>If you choose to use [my\|our] Service, then you agree to the collection and use of information in
	relation with this policy. The Personal Information that [I\|we] collect are used for providing and
	improving the Service. [I\|We] will not use or share your information with anyone except as described

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