Rubyのhash
Rubyのhash
hashの基本的な利用方法まとめ
hashの取り出し方
ハッシュ[ キー]
例)
currencies = { 'hoge' => 'soccer', 'huge' => 'baseball', 'hogehoge' => 'basketball' } currencies[' hoge'] #=> 'soccer' 'hoge' => キー 'soccer'=> バリュー
hashの繰り返し処理
hashは繰り返し処理が出来ます。 例)
currencies = { 'hoge' => 'soccer', 'huge' => 'baseball', 'hogehoge' => 'basketball' } currencies. each do | key, value | puts "#{key} : #{value}" end #=> hoge : soccer # huge : baseball # hogehoge : basketball