From: "Chas. Owens" <[EMAIL PROTECTED]>
> On Dec 28, 2007 10:15 AM, Adarsh Srivastava
> <[EMAIL PROTECTED]> wrote:
> > Hello,
> >
> > Is there any inbuilt/external function or library that can convert a text
> > expression (eg. "22 + 23") and evaluate the resulting value?( 45 in this
> > case).
> snip
>
> Well, the string form of eval will do this; however, it is very
> dangerous. What if the string contained valid Perl code* to do
> something on your system? Any time you use the string form of eval
> you should first run the string through a regex make sure it only
> contains things you expect it to.
Another way to restrict what the evaled code may do is to use the
Safe.pm module.
use Safe;
$safe = new Safe;
$safe->reval("22+23");
HTH, Jenda
===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz =====
When it comes to wine, women and song, wizards are allowed
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