From: Ken Bloom <kbloom@...>
Date: 2009-03-19T00:37:30+09:00
Subject: Re: Interpolating $1, etc., from within a gsub block

On Tue, 17 Mar 2009 14:52:08 -0500, Lloyd Zusman wrote:

> Lloyd Zusman <ljz <at> asfast.com> writes:
> 
>> [ ... ]
>>
>> string.gsub!($fromre) {
>>   |x|
>>   $replcount += 1
>>   $repl
>> }
>> 
>> 
> Well, I came up with the following, but I'm still wondering if there is
> a more elegant way to do this:
> 
> string.gsub!($fromre) {
>   |x|
>   $replcount += 1
>   eval "$result = \"#{$to}\""
>   $result
> }

I think you're going overboard with variables (and global variables in 
particular)

an eval "\"#{$to}\"" would have been sufficient here, and if you really 
needed a new variable, then calling it simply result (without the dollar 
sign) would have given you a local variable.


-- 
Chanoch (Ken) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/