Re: [FWP] Stumper

[Piers Cawley <pdcawley@bofh.org.uk>]

Michael G Schwern <schwern@pobox.com> writes:

> I'm stumped.  I want to know how many times a certain function is
> called inside a lexical block without actually running that block of
> code.  For example:
> 
>         foo {
>             bar();
>             bar();
>             bar();
>         };
> 
> Assuming foo() is prototyped (&), how could it know that bar() is
> called three times in that block without actually running it?
> 
> I'd like to avoid a filter.  Maybe reading the opcodes with B?

Isn't this a halting problem issue?

foo { bar() if bar() && bar() };

How many times does bar get run?

-- 
Piers


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