>>>>> "SF" == Shlomi Fish <shlo...@iglu.org.il> writes:
SF> On Wednesday 09 Jun 2010 02:43:57 sillymonkeysoftw...@gmail.com wrote: >> Hi everyone, >> >> I'm working with some customizable data from a config file, and can't >> for the life of me figure out how to test conditionals from an >> external source. >> Does anyone have an idea how to accomplish something like: >> >> my $statement = "1 < 10 and 2 > 10"; # obviously false >> my $result = ($statement) ? 1 : 0; # conditional test >> >> Now, $result will always be true(1), because the conditional is >> really, in effect, just validating that $statement is a defined >> scalar, not testing the statement. >> But, how can I perform an actual conditional statement on this? >> What I really want is: >> >> (1 < 10 and 2 > 10) ? 1 : 0; >> SF> You can opt to use string eval, but this opens up a lot of security problems. SF> Alternatively write your own parser for a mini-language: http://perl- SF> begin.org/uses/text-parsing/ . gack, no need for a parser, mini or otherwise. keep complexity out of this with a simple table of comparison values. see my other post for more. if he wants full perl code, then use a dispatch table. uri -- Uri Guttman ------ u...@stemsystems.com -------- http://www.sysarch.com -- ----- Perl Code Review , Architecture, Development, Training, Support ------ --------- Gourmet Hot Cocoa Mix ---- http://bestfriendscocoa.com --------- -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
