ChristianEspinoza chespinoza

The Pledge

One thing that always made me a little sad about transducers was how map lost its ability to iterate multiple collections in parallel. This is actually my favorite feature of map. For example:

(map + (range 5) (range 5 10))
=> (5 7 9 11 13)

One somewhat practical use of this is if you want to compare two sequences, pairwise, using a comparator. Though I wish that every? took multiple collections, this is an adequate substitute:

If you want to learn Scala, I’d suggest:

Install IntelliJ + Scala Plugin
Don’t do the Coursera courses yet.
Don’t do the “red book” Functional Programming in Scala yet.
Do: http://underscore.io/books/
- Essential Scala
- Essential Play
- Essential Slick
Do Scala for the Impatient: https://www.amazon.com/Scala-Impatient-Cay-S-Horstmann/dp/0321774094
The Neophyte’s Guide to Scala http://danielwestheide.com/scala/neophytes.html

Getting Started in Scala

This is my attempt to give Scala newcomers a quick-and-easy rundown to the prerequisite steps they need to a) try Scala, and b) get a standard project up and running on their machine. I'm not going to talk about the language at all; there are plenty of better resources a google search away. This is just focused on the prerequisite tooling and machine setup. I will not be assuming you have any background in JVM languages. So if you're coming from Python, Ruby, JavaScript, Haskell, or anywhere… I hope to present the information you need without assuming anything.

Disclaimer It has been over a decade since I was new to Scala, and when I was new to Scala, I was coming from a Java and Ruby background. This has probably caused me to unknowingly make some assumptions. Please feel free to call me out in comments/tweets!

One assumption I'm knowingly making is that you're on a Unix-like platform. Sorry, Windows users.

Getting the JVM

Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

Oh my zsh.

Install with curl

sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Enabling Plugins (zsh-autosuggestions & zsh-syntax-highlighting)

Download zsh-autosuggestions by

See also, http://libraryofalexandria.io/cgo/

Using Go `cgo`

cgo has a lot of trap.
but Not "C" pkg also directory in $GOROOT/src. IDE's(vim) Goto command not works.

So, Here collect materials.

Install
Shell exports
Directory explanations
Automatic Imports
Private repo access
Guard (automatic go run)
Godo
Spurious
AWS SDK with Go (inc. some old possibly broken examples)
Build and Compilation

	import thing

	import pytest
	import requests_mock as rm_module


	@pytest.fixture
	def requests_mock(request):
	m = rm_module.Mocker()
	m.start()

	; The sample to refactor
	(if-let [x (foo)]
	(if-let [y (bar x)]
	(if-let [z (goo x y)]
	(do
	(qux x y z)
	(log "it worked")
	true)
	(do
	(log "goo failed")

	//Look for other responsivevoice instances
	/*if (window.parent != null) {
	var iframes = window.parent.document.getElementsByTagName('iframe');
	for (var i = 0; i < iframes.length; i++) {
	//iframes[i].style.width = "300px"
	}
	}*/

	if (typeof responsiveVoice != 'undefined') {
	console.log('ResponsiveVoice already loaded');