ruby中如何给变量赋值

Ruby中，你可以这样赋值，很神奇吧

foo, bar = [1, 2]  # foo = 1; bar = 2
foo, bar = 1, 2    # foo = 1; bar = 2
foo, bar = 1       # foo = 1; bar = nil

给一个很好的列子

>> name = "Joe Bloggs"
=> "Joe Bloggs"
>> firstname, lastname = name.split
=> ["Joe", "Bloggs"]
>> firstname
=> "Joe"
>> lastname
=> "Bloggs"
>> name
=> "Joe Bloggs"