本课内容目前为英文。
Blocks and iterators
A block is a piece of code you pass to a method, written between { } or do ... end. Ruby's collections are built around blocks, and they turn loops into short, readable lines.
本课内容目前为英文。
A block is a piece of code you pass to a method, written between { } or do ... end. Ruby's collections are built around blocks, and they turn loops into short, readable lines.