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Excellent! ++! Now, that explains what's going on. It's a little worrying that these examples are not in the Error documentation. A few thoughts:

The first example, to me, is an example of how not to use try-catch. To me, you shouldn't be doing a return 0 within a catch. You should be rethrowing some error after doing what you needed to do. The only return statement should be as a result of success. Regardless of memory leaks, that's just poor practice.

The second method ... the closure concern is a bit harsher for me. Matts does provide a solution for it, but I don't like it as it removes the major benefit imho, which is the syntactic sugar. I'll have to think about it and see whether it has a good workaround.

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In reply to Re4: Learning how to use the Error module by example by dragonchild
in thread Learning how to use the Error module by example by cleverett

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    [choroba]: Unfortunately, none of it is online
    [haukex]: I figured that POD tests make sense, but only as author tests
    [choroba]: I mean, the slides are, but not the makefile with scripts to create them
    [Corion]: haukex: I've only now arrived at that revelation ;)
    [Corion]: choroba: I use spod5, which also has that support, and also implements its own kinda-make stuff
    [haukex]: But that module I just linked to assumes that most verbatim blocks are runnable code, I have other modules where that's not the case, so there I just copy-and-paste the synopsis into the author tests...
    [haukex]: not the most efficient, but then again, I don't have that many modules on CPAN :-)
    [Corion]: haukex: Yes, but if it's only supposed to run on my machine, I can be far more liberal with how I extract the code etc.
    [Corion]: haukex: Yes - I see the benefit of using Dist::Zilla for people with 150+ modules on CPAN, but I don't see it for myself, and I'm always put off from contributing to such modules because they require a lot of toolchain setup that I don't want to ...
    [Corion]: ... spend time on if I only want to provide a short patch

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