Tom Schroeder jtomschroeder

The introduction to Reactive Programming you've been missing

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.

Partial Evaluation, Futamura Projection And Their Applications

What Partial Evaluation Is?

Partial evaluation means to fix some variables in the given code before execution. With a traditional implementation of a compiler or an interpreter, all variables are replaced with its value on each evaluation of that variable. This is because a variable can change at any timing. This is, however, not always true in actual applications. Almost all of large applications has setting variables and data

true and false vs. "truthy" and "falsey" (or "falsy") in Ruby, Python, and JavaScript

Many programming languages, including Ruby, have native boolean (true and false) data types. In Ruby they're called true and false. In Python, for example, they're written as True and False. But oftentimes we want to use a non-boolean value (integers, strings, arrays, etc.) in a boolean context (if statement, &&, ||, etc.).

This outlines how this works in Ruby, with some basic examples from Python and JavaScript, too. The idea is much more general than any of these specific languages, though. It's really a question of how the people designing a programming language wants booleans and conditionals to work.

If you want to use or share this material, please see the license file, below.

	class LinkedList(T)
	include Enumerable

	class Node(T)
	property :next
	property :data

	def initialize(@data : T, @next = nil)
	end
	end

	require 'rubygems'
	require 'mechanize'

	FIRST_NAME = 'FIRST_NAME'
	LAST_NAME = 'LAST_NAME'
	PHONE = 'PHONE'
	EMAIL = 'EMAIL@provider.com'

	PARTY_SIZE = 2
	SCHEDULE_RANGE = { :start_time => '19:00', :end_time => '20:30' }

	#include "SDL.h"
	#include "SDL_image.h"
	#include "SDL_rotozoom.h"

	#ifdef EMSCRIPTEN
	#include "emscripten.h"
	#endif

	SDL_Surface *screen;
	SDL_Surface *sprite[4];

	/*
	* Minimal C++ implementation of Functor, Monad and Maybe.
	*
	* Requires c++0x variadic templates and lambda expressions:
	*
	* g++ -std=c++0x main.cpp -o main
	*
	* fmap, monadic bind and return implementations for std::vector
	* and Maybe.
	*

	#!/bin/bash

	# MacRuby
	rm -rf /Library/Frameworks/MacRuby.framework

	XCODE_DIR=`xcode-select -print-path`
	# tool
	rm -f "$XCODE_DIR"/usr/bin/rb_nibtool
	rm -f "$XCODE_DIR"/Tools/rb_nibtool