Ruby deleteでハッシュの値を削除するサンプル
環境
Windows11 pro 64bit
ruby ruby 3.0.3p157
構文
ハッシュ名.delete('キー名’)
deleteを使用すれば、ハッシュの値を削除します。
使用例
h = {'keya' => 21, 'keyb' => 22, 'keyc' => 43}
p h['keya']
h.delete('keya')
p h['keya']
p h
h = {'keya' => 21, 'keyb' => 22, 'keyc' => 43}
p h['keya']
h.delete('keya')
p h['keya']
p h
h = {'keya' => 21, 'keyb' => 22, 'keyc' => 43}
p h['keya']
h.delete('keya')
p h['keya']
p h
実行結果
21
nil