katoy

#! /bin/bash

set -euf -o pipefail

function cleanup {
    for pid in "${opencv_download_pid:-''}" "${contrib_download_pid:-''}" "${pip_install_pid:-''}"; do
        if [ -z "${pid}" ]; then
            kill "${pid}"
        fi
    done

katoy

class ChangeColumnToUser < ActiveRecord::Migration[5.0]
  def change
    # 追加
    add_column :users, :piyo, :string
    add_column :users, :piyo2, :string
    # 削除
    remove_column :users, :piyo2, :string
    # rename
    rename_column :users, :name_x, :name
  end

katoy

# See
#  http://qiita.com/jnchito/items/640f17e124ab263a54dd

require 'spec_helper'

class WeatherBot
  def tweet_forecast
    twitter_client.update '今日は晴れです'
  rescue => e

katoy

# ------ 実行例
$ ruby rest.rb 
id:064c0150-db48-11e4-835e-12f5ba1407e2, name:"ローン申請の 審査"
id:073f66b2-db36-11e4-bc81-12f5ba1407e2, name:"Assign Approver"
id:077a4cf8-db36-11e4-bc81-12f5ba1407e2, name:"Review Invoice"
id:0bd16b17-db39-11e4-b167-12f5ba1407e2, name:"Assign Approver"
id:0bf6a67d-db39-11e4-b167-12f5ba1407e2, name:"Review Invoice"
id:247d07d5-db14-11e4-9656-12f5ba1407e2, name:"Prepare Bank Transfer"
id:304be6fb-db4e-11e4-b444-12f5ba1407e2, name:"Assign Approver"
id:3079fbeb-db4e-11e4-b444-12f5ba1407e2, name:"Approve Invoice"

katoy

$ rake -T routes
rake routes      # Print out all defined routes in match order, with names
rake routes:csv  # Print out all defined routes in CSV format

$ rake routes:csv
Prefix, Verb, URI Pattern, Controller#Action
data, GET, /data(.:format), data#index
, POST, /data(.:format), data#create
new_datum, GET, /data/new(.:format), data#new
edit_datum, GET, /data/:id/edit(.:format), data#edit

katoy

# coding: utf-8

File.open(ARGV[0], "r:utf-8" ) do |f|
  while line  = f.gets
    line2 = ''
    line.chars do |c|
      line2 += c
      code = c.ord
      line2 += ' ' unless 0 <= code && code <= 255
    end

katoy

# coding: utf-8
# See Book "http://ptgmedia.pearsoncmg.com/images/9780321942043/samplepages/9780321942043.pdf"
#          "From Mathematics to Generic Programming"

def odd?(n)
  (n & 1) == 1
end
def half(n)
  n >> 1
end

katoy

# See http://keibakuroku.jp/category/brain-teaser

def pi_1(len)
  count = 0
  k, a, b, a1, b1 = 2, 4, 1, 12, 4

  while TRUE
    # Next approximation
    p, q, k = k*k, 2*k+1, k+1
    a, b, a1, b1 = a1, b1, p * a + q * a1, p * b + q * b1

katoy

# coding: utf-8

# See http://ja.stackoverflow.com/questions/4739
#     https://gist.github.com/snipsnipsnip/0e267f6a39cc2397da3d
#
# 2 分木をコンソールにアスキーアートで出力する。
#

require 'gviz'  # gem install gviz

katoy

#!/usr/bin/xcrun swift

// See https://gist.github.com/kristopherjohnson/eb7dc5b6af06eb42ef38
//     http://codereview.stackexchange.com/questions/56872/fraction-rational-number-structure-with-custom-operators

import Cocoa

public struct Rational {
    let numer: Int
    let denom: Int