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shun0211/hash.rb

Created July 26, 2022 06:40
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hashの[]メソッドについてメモ
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hash.rb
hash = {a: 'a', b: 'b'}
# Hashクラスには[]メソッドがある。
# 普通、hash[:a]のように使う。
# []メソッドなので、下のように書ける。
hash.[] 'a'
# => 'a'
hash.[]('a')
# => 'a'
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