Ruby 配列 あれこれ

Ruby Array

配列の代入方法を備忘録として記述

特定の値の抽出

通常

a = ["aaa", "bbb", "ccc"]

ary1 = []
ary2 = []
a.each do |t|
  case s
  when /aaa/
      ary1 << t
  else
      ary2 << t
  end
end

結果

ary1 #=> aaa
ary2 #=> bbb, ccc

長い・・・

select

a = ["aaa", "bbb", "ccc"]
ary1 = a.select { |t| t =~ /aaa/ }
ary2 = a - ary1

よくなった

partition

a = ["aaa", "bbb", "ccc"]
ary1,ary2 = a.partition { |t| t =~ /aaa/ }

よき