From: "Kroeger, Simon (ext)" <simon.kroeger.ext@...>
Date: 2005-10-19T00:29:53+09:00
Subject: Re: Unit testing an each function

 

> -----Original Message-----
> From: Peter Hickman [mailto:peter@semantico.com] 
> Sent: Tuesday, October 18, 2005 5:25 PM
> To: ruby-talk ML
> Subject: Re: Unit testing an each function
> 
> James Edward Gray II wrote:
> 
> > On Oct 18, 2005, at 10:04 AM, Peter Hickman wrote:
> >
> >> # What I want to work is
> >>
> >> data.each.each{|i| puts i}
> >
> >
> > If you know there's going to be Enumerable objects in 
> there, perhaps  
> > you could redefine each() to handle the nesting, or provide 
> another  
> > iterator for this...
> >
> > James Edward Gray II
> 
> It's no great hardship it is just that I was taken aback when 
> data.each.each{...} didn't work, it seemed like the right 
> thing to type 
> at that point.

does this look more natural to you?

class Array
  def flatten
    inject([]){|m, o| o.respond_to?(:flatten) ? m + o.flatten : m << o}
  end
end

class Range
  def flatten
    inject([]){|m, o| o.respond_to?(:flatten) ? m + o.flatten : m << o}
  end
end

data = Array.new
data << (1..5)
data << (10..20)

data.flatten.each{|i| p i}

cheers

Simon