kyuden’s gists

kyuden / gist:fabce1d756ecd5e7c651

Last active August 29, 2015 14:04

Array#select(Enumerable#select), Hash#select

	Hash#find_all
	Hash#select

	h = {a: 1, b: 2, c: 3}
	h.find_all { \|key, value\| value.odd? } #=> [[:a, 1], [:c, 3]]
	h.select { \|key, value\| value.odd? } #=> {:a=>1, :c=>3}

	Array#select
	Array#select

kyuden / gist:5f56bc14efe5f56b0979

Created August 4, 2014 01:22

Enumable条件検索系

	Enumable#grep

	レシーバと引数が===と一致するかどうかで絞り込む
	# ===で一致するか、ということは==の条件に「範囲ないか」「インスタンス、クラスに属するか」「正規表現に一致するか」は加わったもの

	(1..10).grep(2..3) #=> [2, 3]
	%w\|a 1 * @\|.grep(/[1-9]/) #=> ["1"]
	["a", 1, "&", "@"].grep(Integer) #=> [1]

	grepの良い所は条件でしぼりこんだあとにブロックを渡して更に処理ができる

kyuden / web-server.rb

Last active August 29, 2015 14:06 — forked from Integralist/web-server.rb

	#!/usr/bin/env ruby

	require "webrick"

	=begin
	WEBrick is a Ruby library that makes it easy to build an HTTP server with Ruby.
	It comes with most installations of Ruby by default (it’s part of the standard library),
	so you can usually create a basic web/HTTP server with only several lines of code.

	The following code creates a generic WEBrick server on the local machine on port 1234,

kyuden / mutable_constant.rb

Last active August 29, 2015 14:13

定数フリーズまとめ

	class MutableConstant
	SERVICE_TYPES1 = ["basic", "premium", "pro"]
	SERVICE_TYPES2 = ["basic", "premium", "pro"].freeze
	SERVICE_TYPES3 = ["basic", "premium", "pro"].map(&:freeze).freeze

	module Defaults
	SERVICE_TYPES1 = ["basic", "premium", "pro"]
	SERVICE_TYPES2 = ["basic", "premium", "pro"].freeze
	SERVICE_TYPES3 = ["basic", "premium", "pro"].map(&:freeze).freeze
	end

kyuden / gist:654236a100f81d03d22b

Created February 1, 2015 13:57

nilチェック入りeach

kyuden / cattr_accessor_vs_class_attribute

Last active August 29, 2015 14:15

cattr_accessor vs class_attribute

	[1] pry(main)> class Base
	[1] pry(main)* cattr_accessor :setting2
	[1] pry(main)* end
	=> [:setting2]

	[2] pry(main)> class Subclass < Base ; end
	=> nil
	[3] pry(main)> Base.setting2
	=> nil
	[4] pry(main)> Base.setting2 = true

kyuden / unread.md

Created February 15, 2015 11:32

unread 概略構成

全体像

├── .gemtags
├── .gitignore
├── .tags
├── .tags_sorted_by_file
├── .travis.yml

kyuden / typeof.js

Last active October 16, 2015 10:00

社内JS勉強会 : typeof検定

	// 環境 node v4.1.2
	// 実行せず出力結果を記述しなさい
	console.log(typeof 'foo');
	console.log(typeof new Object());
	console.log(typeof undefined);
	console.log(typeof new Function('x', 'y', 'return x * y'));
	console.log(typeof true);
	console.log(typeof /abc/g);
	console.log(typeof String('hoge'));
	console.log(typeof 10);

kyuden / install_jman.sh

Created June 11, 2016 17:38 — forked from ay65535/install_jman.sh

日本語manページをインストールするスクリプト (Mac用，というか自分用)

	#!/usr/bin/env bash
	# 参考サイト: http://tukaikta.blog135.fc2.com/blog-entry-224.html

	# ================各種設定================

	# ダウンロードするファイル (GNU 日本語man)
	#
	# http://linuxjm.sourceforge.jp/ からダウンロードするファイルを指定します。
	#export GNUJMAN=man-pages-ja-20120915.tar.gz
	#export GNUJMAN=man-pages-ja-20150315.tar.gz

kyuden / gist:2dd57c75914c27877367349162ddacc3

Created June 18, 2016 07:33

Masahiro Kyuden kyuden