From: Brian Candler <b.candler@...>
Date: 2009-11-21T23:00:35+09:00
Subject: Re: confuse about initialize hash

Zhenning Guan wrote:
> all I confusing is the process. the hash parameter is used a lot in the 
> rails code.

It is a special case: when the last argument to a method call is a hash, 
then you can omit the outer braces.

>> def example(*args); p args; end
=> nil
>> example(123, 456, {"foo"=>9, "bar"=>11})
[123, 456, {"foo"=>9, "bar"=>11}]
=> nil
>> example(123, 456, "foo"=>9, "bar"=>11)
[123, 456, {"foo"=>9, "bar"=>11}]
=> nil
>> 
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