http://qiita.com/ryonext/items/4ed2f7635135a7b388f3 DATE(:created_at)が使える pry(main)> Deal.all.group("date(created_at)").select("date(created_at)").count (0.5ms) SELECT COUNT(date(created_at)) AS count_date_created_at, date(created_at) …

Active Suportの機能なのでrequireすればいい、と思いきや、require 'active_support'じゃ駄目だった。 http://stackoverflow.com/questions/4238867/how-do-i-use-active-support-core-extensions require 'active_suport/all'する。 $ irb > require 'acti…

https://github.com/gmarik/Vundle.vim/issues/202filetype onとfiletype offの間にvim-coffee-scriptを宣言する call neobundle#rc(expand('~/.vim/bundle/')) syntax on syntax enable filetype off NeoBundle 'kchmck/vim-coffee-script' "this should co…