JunichiIto

require 'minitest/autorun'
require 'json'
require 'date'

def execute
  # How to create qiita.json
  # 1. curl -o qiita.json https://qiita.com/api/v2/items?page=1&per_page=100&query=title%3A%E9%9A%8F%E6%99%82%E6%9B%B4%E6%96%B0
  # 2. curl -o qiita.json https://qiita.com/api/v2/items?page=2&per_page=100&query=title%3A%E9%9A%8F%E6%99%82%E6%9B%B4%E6%96%B0
  # 3. Merge them manually
  path = '/Users/jit/Desktop/qiita.json'

JunichiIto

RSpec.describe 'Sample' do
  after do |example|
    if example.exception
      puts 'Error!'
    else
      puts 'OK!'
    end
  end

  example 'sample' do

JunichiIto

require 'benchmark'

def with_sum
  (0..9_999_999)
    .map { |n| n * 2 }
    .select { |n| n % 3 == 0 }
    .sum
end

def with_inject

JunichiIto

➜  ~ ruby -v
ruby 2.3.4p301 (2017-03-30 revision 58214) [x86_64-darwin16]
➜  ~ irb
irb(main):001:0> [].delete 1 { 'NG' }
SyntaxError: (irb):1: syntax error, unexpected '{', expecting end-of-input
[].delete 1 { 'NG' }
             ^
	from /Users/jit/.rbenv/versions/2.3.4/bin/irb:11:in `<main>'
irb(main):002:0> exit
➜  ~ rbenv shell 2.4.1 

JunichiIto

発生している問題

こちらを参照。

原因（推測）

• Turbolinksの5.xがインストールされている（Gemfile.lockをチェック！)
  • Gemfileにgemのバージョンを指定しないと、最新バージョンがインストールされる可能性がある
• jquery-turbolnksはTurbolinks 2.xまでしか対応していない
• このためjquery-turbolnksを入れても、jQueryのイベントがうまく設定されない

JunichiIto

-- http://qiita.com/jnchito/items/29e22cc5a73da29f65a3
SELECT
  e.id
 ,e.name
 ,sh.section_name
 ,to_char(sh.start_date, 'yyyy/mm/dd') as start_date
FROM
  employees e
INNER JOIN
  section_histories sh

JunichiIto

-- http://qiita.com/jnchito/items/1d21fa3970b3c76bee43
WITH target_dates AS
  (SELECT joined_on AS target_date
   FROM users
   UNION 
   SELECT left_on AS target_date
   FROM users
   WHERE left_on IS NOT NULL ),
joined_counts AS
  (SELECT joined_on,

JunichiIto

fizz_buzz = -> (n) do
  f = -> (cond, ans, nxt, n) { n % cond == 0 ? ans : nxt.(n) }.curry
  patterns = [[n, n.to_s], [5, 'Buzz'], [3, 'Fizz'], [15, 'Fizz Buzz']]
  patterns.inject(nil) { |nxt, (cond, ans)| f.(cond, ans, nxt) }.(n)
end

(1..20).map(&fizz_buzz)
=begin
[
    [ 0] "1",

JunichiIto

-- https://gist.github.com/natcl/7a5c98aae8b21475caf9
log "start"
property imageFiles : {"jpg", "pef", "dng", "jpeg"}

tell application "Finder"
	set MyFolder to folder POSIX file "/Users/your-path/"
	set SubFolders to every folder of MyFolder
end tell

repeat with aFolder in SubFolders

JunichiIto

Because Junichi Ito's post was public, I wanted to translate my answer to Japanese before posting it. Here's my English answer:

Thanks for your comments and your support! I realise we should have done a better job at explaining how we arrived at the pricing.

With Doorkeeper, we’re focused on organisers who hold events on a regular basis, not one off events. This is why we’ve chosen to go with monthly pricing, instead of one a one off fee. We think Doorkeeper already provides you some value when you’re not holding events (people can join your community, you can send them messages), and we want look to how we can provide even more continuous value for communities. If you have any ideas how we could make Doorkeeper more valuable to you even when you’re not holding an event, please let us know.

We chose the smallest plan to have five upcoming events number because we thought it would be the largest number a non professional event organiser would have. We think that ¥1,500 per month is a reasonable price even i