More than 5 years have passed since last update.

【メモ】rubyで配列の空文字要素を削除する

Ruby
Rails

Last updated at 2014-11-24Posted at 2014-11-24

map関数などと組み合わせて任意の要素を削除したい場合に使う

tags = {
  :val1 => "aaa",
  :val2 => "bbb",
  :val3 => "ccc"
}
t = tags.map { |key, value| key unless value == "bbb" }
t -= [nil]
p t
=> [:val1, :val3]

参考URL

You get articles that match your needs
You can efficiently read back useful information
You can use dark theme

What you can do with signing up