I see that as a variation on levels of function calls. You want to know whether you are in the function call in question.

But there are several ways to do the above. One crazy approach is to write a function set_debugging that replaces a function with a wrapped version that sets and unsets debugging as above. Take a look at the implementation of Memoize if you need hints on how to do that. Or for methods you can use Class::Contract and set pre and post conditions. Once written, using it is easy.

Still this is a case where dynamic scope makes it simple and handles hard cases like unexpected interior exits - possibly from a die/eval pair.

In reply to Re: Re: Re: Why does Perl use dynamic scoping? by Anonymous Monk
in thread Why does Perl use dynamic scoping? by blokhead

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