From: John Johnson <jj5412@...>
Date: 2003-06-12T05:21:20+09:00
Subject: Re: Multiple Initialize methods?

Set the parameters to some default value that will let you know if they were
passed:

class Whatever
    NOT_GIVEN = -1
    def initialize(xdim = NOT_GIVEN, ydim = NOT_GIVEN)
        if xdim = NOT_GIVEN
            xdim = foo
etc.

w = Whatever.new
w = Whatever.new(23, 44)

Regards,
  JJ

on 6/11/03 3:54 PM, Nick at nick.robinson@f.co.uk wrote:

> Hi,
> 
> I need to create a class either with a param in the construction or nothing:
> 
> something = Object.new
> 
> or
> 
> something = Object.new(val1, val2)
> 
> I have created an emtpy initialize() method and one with the two params.  If
> I try to create the object with nothing (first version) then I get
> "ArgumentError: wrong number of arguments(0 for 2)".
> 
> class Something
> def initialize()
> end
> def initialize(xdim, ydim)
> @xdim = xdim
> @ydim = ydim
> end
> 
> I put the empty initialze in when things didnt work, thinking i needed at
> least a marker.
> 
> Thanks for any help,
> 
> Nick.
> 
> 
>