From: Brian Candler <B.Candler@...>
Date: 2004-09-19T01:32:13+09:00
Subject: Re: [Nuby Question] Return value of while loop.

On Sat, Sep 18, 2004 at 05:44:44PM +0900, Brian Schrder wrote:
> PS: If you want you can see this as a warmup for our first Quiz ;). What
> is the most concise way to write this:
> 
> i = 1
> loop do
>   i *= 2
>   break i if i > 100
> end
> 
> which would simulate the behaviour I'd expect of the 2-liner above. (No
> semicolons allowed)

I can do that in 5 characters plus a newline:

i=128

:-)

Perhaps you should reword your question as:

# x is initialised to an Integer
i = 1
loop do
  i *= 2
  break i if i > x
end

in which case the smallest I can think of is:

i=1
i*=2 while i<=x
i

(the third line being necessary since you want the answer to be the value of
the overall expression, not just being left in 'i')

Regards,

Brian.