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Daichi Nagata answered on June 26, 2022 Popularity 10/10 Helpfulness 1/10

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# アスタリスク単体で、受け取った引数を無視できる
def hoge_3(bar, *)
  p "#{bar} world!!!"
end

hoge_3('Hello', 'hoge', 'fuga') 
#=> "Hello world!!!"

# 仮引数ではなく実引数にアスタリスクをつけると、配列を展開して渡される
def foo(bar, baz, qux)
  p bar << baz << qux
end

foo(*['Hello', 'World', '!!!']) # foo('Hello','World','!!!')と同意
#=> "HelloWorld!!!"

Popularity 10/10 Helpfulness 1/10 Language ruby

Source: Grepper

Tags: ruby

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Contributed on Jun 26 2022

Daichi Nagata

0 Answers Avg Quality 2/10

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# アスタリスク2つつけるとハッシュになる
def huga(**a) # def huga(a = {})と同意
  p a
end

huga(b:1,c:2)
#=> {:b=>1, :c=>2}

def huga_2(a)
  p a 
end
huga_2({a:1,b:2})

Popularity 7/10 Helpfulness 2/10 Language ruby

Source: Grepper

Tags: ruby

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Contributed on Jun 26 2022

Daichi Nagata

0 Answers Avg Quality 2/10

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