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[メモ] rubyについて

Last updated at Posted at 2019-09-14

メソッドについて

代入関数とは

サンプル

class Hoge
 def current_user=(user)
  @current_user = user
 end
end

hoge = Hoge.new
hoge.current_user = 'HogeHoge'

普通のメソッド

class Hoge
  def current_user(user)
    @current_user = user
  end
end

hoge = Hoge.new
hoge.current_user('HogeHoge')

mapの使い方

配列でもいける

Array.map{|obj|
 #  計算式..etc
}

hashでもいける

Hash.map{|obj|
 #  計算式..etc
}

省略した書き方でもいける

Hash.map(&:メソッド名)
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