Ken Takagiwa giwa

       DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
               Version 2, December 2004

Everyone is permitted to copy and distribute verbatim or modified copies of this license document, and changing it is allowed as long as the name is changed.

DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

太一のコードの読み方メモ

全体として太一が感覚的に実践している事を論理的に説明しようと試みている為、
説明の粒度が適切でなかったり一貫性が無いように見える部分があるかもしれない。
普段やっているけども書ききれていない事も多分きっとある。

コードを読むとは何か

コードを嗜む
コードを学ぶ
武器を手に入れる

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.

	import sqlalchemy as sa
	import sqlalchemy.orm as orm
	from sqlalchemy.ext.declarative import declarative_base
	from sqlalchemy.ext.declarative import declared_attr
	from sqlalchemy.orm import scoped_session, sessionmaker

	DBSession = scoped_session(sessionmaker())
	class BaseMixin(object):
	query = DBSession.query_property()
	id = sa.Column(sa.Integer, primary_key=True)

	package main

	import (
	"fmt"
	"net/http"
	"time"
	)

	var urls = []string{
	"https://splice.com/",

	package kis.basicdb;

	import java.io.PrintWriter;
	import java.io.StringWriter;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.HashMap;

	# Install Homebrew

	ruby <(curl -fsSk https://raw.github.com/mxcl/homebrew/go)

	# Follow on-screen instructions (X11 isn't necessary for this if it shows as not installed)

	brew install node

	# Open .bashrc and add this line (create .bashrc if its not in your home directory already)

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
	<title>Chronological Diagram of Asia</title>
	<script type="text/javascript" src="http://mbostock.github.com/d3/d3.v2.js"></script>
	<style type="text/css">
	.chart {
	shape-rendering: crispEdges;
	}

	## Configure eth0
	#
	# vi /etc/sysconfig/network-scripts/ifcfg-eth0

	DEVICE="eth0"
	NM_CONTROLLED="yes"
	ONBOOT=yes
	HWADDR=A4:BA:DB:37:F1:04
	TYPE=Ethernet
	BOOTPROTO=static

	namespace :image_compression do
	desc 'Optimize images with pngcrush and jpegoptim'
	task :process do

	# Check for pngcrush
	if (!`which pngcrush`.empty? rescue false) # rescue on environments without `which` (windows)

	# Crush all .png files
	run "find #{shared_path}/assets/ -type f -name '*.png' -print0 \| xargs -0 pngcrush -q -e .crushed"

Ken Takagiwa giwa

太一のコードの読み方メモ

コードを読むとは何か

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

Update