From: "David A. Black" <dblack@...>
Date: 2009-11-21T21:14:17+09:00
Subject: Re: confuse about initialize hash

Hi --

On Sat, 21 Nov 2009, vadivelan .K wrote:

> Zhenning Guan wrote:
>> def in(options ={} )
>>   p options
>> end
>>
>> in(:say => "somehting") # {:say => "something"}
>>
>> but under the hood of it, doesn't that process equivalent to
>> -------
>> options = {}
>> options = :say => "something"
>> -------
>> or
>> ------
>> options = :say => "something"
>> ------
>> ??? none of this can compiler.
>> silly question, hope someone help.
>
> Hey Zhenning Guan,
>
> Hope the following sample will help you,
>
> def in(options)
>  p options.class
> end
> in(:say => 'some_value')
>
> the type of argument passed to any method resembles inside the method,
> if you send hash it shows the class as 'Hash'. No need to initialize
> hash or anything in ruby script. It will assign automatically according
> to the values.

Have you tried actually running your example? :-)


David

-- 
THE COMPLEAT RUBYIST, Ruby training with Black/Brown/McAnally!
January 22-23, Tampa, Florida
Info and registration at http://www.thecompleatrubyist.com
--------------------------------------
My new job: http://tinyurl.com/yfpn9hz