Cole Willsea coleww

Clojure Destructuring Tutorial and Cheat Sheet

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

Installing PhantomJS via Homebrew and fixing Ruby if it breaks

PhantomJS is an awesome tool for doing automated, full-stack acceptance tests in a headless browser. It's a great alternative to capybara-webkit because it doesn't depend on QT or xvfb, and it's way better than Selenium in most cases because it's faster (you don't need to open Firefox to run your tests).

Unfortunately, installing PhantomJS via Homebrew can wreak havoc on your Rubies if you're using rbenv. These are the steps that worked for me in fixing my Ruby installations.

# Update Homebrew
brew update
# Install PhantomJS

	function brainfuck(code,input){

	var pc = 0;
	var sysout = [];
	var sysin = input.split('').reverse();
	var ptr = 0;
	var data = [0];
	var size = code.length;
	var program = code.split('')
	var loops = [];

	export RUBY_HEAP_MIN_SLOTS=1250000
	export RUBY_HEAP_SLOTS_INCREMENT=100000
	export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
	export RUBY_GC_MALLOC_LIMIT=30000000
	export RUBY_HEAP_FREE_MIN=12500

	window.setInterval(function(){
	document.getElementsByClassName('action-endorse')[~~(Math.random() * 4)].click()
	}, 5000);

	//paste this into javascript console when the 4 tile DOES __ KNOW ABOUT __? ENDORSE! dialog appears on linked in.
	//they don't seem to be grepping for robots so no need to randomize the interval
	//will run until they run out of recent recommendations. click around a bit and it will come up again.

	class String
	def \|(other)
	other.call(*self)
	end

	def >(other)
	File.write(other, *self)
	0
	end
	end

	var stream = tmpStream(function(filename, stat, cb) {
	// do stuff
	// when done call cb which will unlink filename
	// plus emit 'finish' on stream (or 'error' if called with an error)
	})

	stream.write('hello world')
	stream.end()

	stream.on('finish', function() {

	Turning The Design Clock Back

	Object-oriented design principles haven't had the effect we hoped for. The
	SOLID principles are excellent design guidelines, but experience shows that
	programmers find them difficult to follow. What do we do about this?
	Surprisingly, the Structured Design literature of forty years ago contains
	compelling solutions to many current design problems. They're simple and easy
	to understand, but were lost in the noise as OO rose to popularity. We'll
	reinterpret these simple design ideas in a modern context, finding that many of
	our most promising new design ideas resemble them. Rapid web application

	Turning The Metal Clock Back

	Forge-driven metal principles haven't had the effect we hoped for. The
	NORCAL principles are excellent metal guidelines, but experience shows that
	metallurgists find them difficult to follow. What do we do about this?
	Surprisingly, the Structured metal literature of two months ago contains
	compelling solutions to many current metal problems. They're simple and easy
	to understand, but were lost in the noise as TDD rose to popularity. We'll
	reinterpret these simple metal ideas in a modern context, finding that many of
	our most promising new metal ideas resemble them. Rapid reverse-forge driven

	var test = require('tap').test;
	var tests = require('./tests.js');

	tests(test);