From: dblack@...
Date: 2007-08-10T05:42:55+09:00
Subject: Re: define_method with default parameters

Hi --

On Fri, 10 Aug 2007, ara.t.howard wrote:

>
> On Aug 9, 2007, at 11:20 AM, Gordon Thiesfeld wrote:
>
>> 
>> Not sure if this is the most elegant way, but:
>>
>>  define_method(:method_name) do |*args|
>>    parameter, parameter2 = *args
>>    parameter2 ||= 'default'
>>    puts parameter
>>    puts parameter2
>>  end
>> 
>> 
>> 
>
> i prefer
>
> define_method 'method_name' do |required, *optional|
>   one, two, *ignored = *optional
> end
>
> because you an error will be thrown if required is not passed and you don't 
> risk slurping ten arguments into 'two'

You can do that just with the comma:

   one, two, = *optional


David

-- 
* Books:
   RAILS ROUTING (new! http://www.awprofessional.com/title/0321509242)
   RUBY FOR RAILS (http://www.manning.com/black)
* Ruby/Rails training
     & consulting:  Ruby Power and Light, LLC (http://www.rubypal.com)