From: Aristarkh A Zagorodnikov <xm@...3d.ru>
Date: 2001-01-18T22:25:33+09:00
Subject: [ruby-talk:9506] Re: Subprocess

> -----Original Message-----
> From: ts [mailto:decoux@moulon.inra.fr]
> Sent: Thursday, January 18, 2001 1:27 PM
> To: ruby-talk ML
> Cc: ruby-talk@netlab.co.jp
> Subject: [ruby-talk:9501] Re: Subprocess
>
> >>>>> "A" == Aristarkh A Zagorodnikov <xm@w3d.ru> writes:
>
> A> 	var = []
> A> or
> A> 	var = Array.new
>
> pigeon% cat b.rb
> #!/usr/bin/ruby
> class Array
>    def initialize(*args)
>       puts "#{args.join ' '}"
>    end
> end
>
> var = [1, 2]
> var = Array.new 3, 4
> pigeon%
>
> pigeon% b.rb
> 3 4
This is because initialize waits for array of args ... and [1, 2] makes
Array object. The correct version of this function will involve testing for
number of args (args.size == 1), and checking type if first element
(args[0].typeof == Array). It may even involve expansion of all passed
arrays and merging them, though it may produce undesired results in some
cases.


Aristarkh A Zagorodnikov, W3D Group
http://www.w3d.ru /// xm@w3d.ru /// ICQ UIN 36987938