2011-11-07から1日間の記事一覧
rubyで ary = [1,2,3] # => [1, 2, 3] ary.object_id # => 2168514860 # 代入しても ary2 = ary # => [1, 2, 3] # 参照先は同じ ary2.object_id # => 2168514860 # dupだと ary3 = ary.dup # => [1, 2, 3] # 新しいリストオブジェクトになる ary3.object_id …
rubyで ary = [1,2,3] # => [1, 2, 3] ary.object_id # => 2168514860 # 代入しても ary2 = ary # => [1, 2, 3] # 参照先は同じ ary2.object_id # => 2168514860 # dupだと ary3 = ary.dup # => [1, 2, 3] # 新しいリストオブジェクトになる ary3.object_id …