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Rubyの繰り返しstepについて

Posted at

Rubyの学習においてstepというものを学習したので
備忘録を兼ねて書いておきます。

nからmまで数値をxずつ増やしながら何らかの処理を実行したいときに利用します。

構文は
開始式.step(上限式,一度に増減する大きさ)
のように書きます。


1から10まで2ずつ増やしたい時

1.step(10, 2) { |n| puts n}

出力結果

1 3 5 7 9

10から1まで2ずつ減らしたい時

10.step(1, -2) { |n| puts n}

出力結果

10 8 6 4 2

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