On Thu, 17 Mar 2005, Ramprasad A Padmanabhan wrote:
> I have a requirement to call a perl script within another and take
> the output
Okay.
The typical way to do this would be to make a module out of it, or at
least a "require" call, but it looks like you may be generating the code
dynamically rather than just running the contents of another file.
That's fine, Perl can do that, too.
> for example
>
> {
> ....
> $script = foo();
> $output = `perl $script $a $b $c `;
> do_someting($output);
> ...
> }
No. Don't do it that way, that's just silly :-)
If the code for $script is being generated by the foo() subroutine, then
why are you not just eval()ing on the spot?
{
$script = foo();
$output = eval{ $script } or
die "Couldn't eval code: $script\n$!\n";
do_something($output);
}
There's no reason to go out and call Perl again; you already have a
perfectly good Perl interpreter running where you are at this point :-)
--
Chris Devers
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