From: Andy Delcambre <adelcambre@...>
Date: 2005-12-13T11:11:23+09:00
Subject: Re: Idiom wanted: do-while

The begin end one functions like a do while loop, the body will always
get executed at least once,  wherease the <code> while <cond> will
only get exectuted if the cond is true.

irb(main):001:0> begin
irb(main):002:1* p "once"
irb(main):003:1> end while nil
"once"
=> nil
irb(main):004:0> p "once" while nil
=> nil

 - Andy Delcambre

On 12/12/05, Mark Ericson <mark.ericson@gmail.com> wrote:
> I did, and I was curious about the statement
>
> > Because it's hard for users to tell
> >
> >   begin <code> end while <cond>
> >
> > works differently from
> >
> >   <code> while <cond>
> >
> >
> in what ways are they different?  Any code examples to show the difference?
>
>
> On 12/12/05, James Edward Gray II <james@grayproductions.net> wrote:
> >
> > On Dec 12, 2005, at 6:19 PM, Adam Shelly wrote:
> >
> > > I was certain I had tried that....
> > > But that works exactly the way I want.
> >
> > But hopefully you followed the Ruby Core link in this thread and saw
> > Matz explaining how he would like to remove it from the language so
> > we shouldn't be using it.  Stick with loop do ... end.
> >
> > James Edward Gray II
> >
> >
>
>