Rubyの多重代入 - milk & honey

Rubyの多重代入

配列の各要素や複数の式を、変数などにまとめて代入する

code:sample.rb

foo, bar = 1, 2 # foo = 1; bar = 2

foo, bar = 1 # foo = 1; bar = nil

foo, bar, baz = 1, 2 # foo = 1; bar = 2; baz = nil

foo, bar = 1, 2, 3 # foo = 1; bar = 2

foo = 1, 2, 3 # foo = 1, 2, 3

*foo = 1, 2, 3 # foo = 1, 2, 3

foo,*bar = 1, 2, 3 # foo = 1; bar = 2, 3