From: Daniel Berger <Daniel.Berger@...>
Date: 2006-03-04T07:54:51+09:00
Subject: Re: Python for Ruby programmers

Joe Van Dyk wrote:
> On 3/3/06, Joe Van Dyk <joevandyk@gmail.com> wrote:
>  > Hi,
>  >
>  > I need to write a GUI for a vanilla RHEL3 box (with no extra software
>  > installed on it).  I figure Python / pygtk2 is a good choice for this,
>  > as it's installed by default.  (Ruby is 1.6.8 on that box, and
>  > ruby-gnome2 isn't installed).  The GUI will do various RPM-related
>  > things -- it's a program that will examine a machine's configuration
>  > and figure out what additional RPMs need to be installed before a user
>  > can run our software.
>  >
>  > I don't know much python, although I did write a small program in it a
>  > few years ago.  Any pointers on where I could get a quick introduction
>  > to it?  I don't need an introduction to programming, I need an
>  > introduction to Python (and preferably from a Rubyist POV).
> 
> What's the Ruby equivalent of this?
> 
> for f in filter(lambda f: f(-1)>=f(1),
>                 [lambda x:x, lambda x:x**2, lambda x:x**3]):
>     for x in range(-10, 11):
>         print x, f(x)
> 

-10.upto(10){ |n| puts "#{n} #{n**2}" }

 >:)

Dan