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【Ruby】if文の条件式で変数を代入する。

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個人メモです。

if(x = test)が何をしているかについて。rubyでは変数の条件式で代入が使える。

##実例

if x = test
  p x
end

=> nil

if x = testで、変数testの値を変数xに代入している。

もし代入元の変数testがfalseなら結果はfalseになる。

p x
「p」は出力。変数xを出力するとの意味。


変数テストに値が存在すれば、if文の結果はtrueになる。
test = "テスト"

if x = test
  p x
end

=> "テスト"
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