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Re: using re 'eval' for varibable math

by tall_man (Parson)
on Apr 19, 2005 at 20:53 UTC ( #449426=note: print w/replies, xml ) Need Help??


in reply to using re 'eval' for varibable math

The Math::Pari module can evaluate mathematical expressions with a more restricted syntax than perl's -- but watch out for "system()". Here's an example.
use strict; use Math::Pari qw(PARI); my $question="67.35 >= 50 && 67.35 < 80"; # Pari doesn't like white space in expressions. $question =~ s/\s+//g; my $out = PARI $question; print $out,"\n";

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[marto]: I always found Strawberry Perl on windows to be a much better environment, made life much easier
[marto]: pp. install it like you would any other module
[marto]: it probably exists in one of the PPM repositories
[marto]: failing that see the README
[mark4]: I installed "PAR" from the ppm install window. pp.exe. did not show up.
[marto]: it should just be a script, pp, or on windows pp.bat, post install you should just be able to call pp -x packed.exe source.pl as the PPM package should put everything required into the appropriate path
[marto]: ah, some time ago pp became it's own package, try searching your repo for PAR::Packer
[marto]: again, Strawberry + cpanm for the win: cpanm pp to install

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