ハッシュに要素を追加する
h = { 'Apple' => 'red', 'Banana' => 'yellow', 'Lemon' => 'yellow', 'Carrot' => 'orange' } h['grape'] = 'purple' # 追加 p h #=> {"grape"=>"purple", "Lemon"=>"yellow", "Carrot"=>"orange", "Apple"=>"red", "Banana"=>"yellow"}
h = { 'Apple' => 'red', 'Banana' => 'yellow', 'Lemon' => 'yellow', 'Carrot' => 'orange' } h['grape'] = 'purple' # 追加 p h #=> {"grape"=>"purple", "Lemon"=>"yellow", "Carrot"=>"orange", "Apple"=>"red", "Banana"=>"yellow"}