From: Erik Veenstra <erikveen@...>
Date: 2006-06-29T05:14:19+09:00
Subject: Re: while modifiers have a scoping bug?!

>  puts(line) while line = gets
>
> The Pickaxe says on page 354 that unless the expression (on
> the left of the while) is not a block, then the loop gets
> executed ZERO or more times. So it has to evaluate the
> condition BEFORE the expression, which ought to assign a
> value to "line" (thus defining it).

Lexically, "puts line" comes first. Although "while line =
gets" is executed first and it does set /a/ (not /the/) line,
it's not yet available for "puts".

>  line = nil
>  puts(line) while line = gets

Now it's the same "line"...

gegroet,
Erik V. - http://www.erikveen.dds.nl/