If it's valid Perl code, you can use eval to evaluate its result. (But note that eval can execute arbitrary code, so you should make sure there are no system calls or other evil things in the string).

There are also modules that execute arithmetic expressions. For example I wrote Math::Expression::Evaluator some time ago, which handles the arithmetic, but iirc not the comparisons. Other modules in the Math:: namespace might do that, though.

In reply to Re: Solving an expression by moritz
in thread Solving an expression by zeni

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