Qiita良いさげ〜！ 使ってみるテスト
CoffeeScriptでRubyのArray#rejectするには
array_reject.rb
a = [1,2,3,4,5]
a.reject {|v| v==3}
array_reject.coffee
a = [1,2,3,4,5]
n for n in a when n!=3
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