On Fri, Apr 15, 2022 at 4:15 PM yary <not....@gmail.com> wrote: > > Here's how I ended up handling input arg validation, with meaningful error > messages, as part of a Perl Weekly Challenge a couple years ago. It looks > almost the same as Luca's original, except mine uses "die" instead of "warn", > which means it won't attempt to continue once it encounters a bad arg.
Interesting, but I used `warn` because I want to display all things that are not correct at once. In the test case I submitted there is no great difference in using warn instead of die, since the program should stop in any case, but if you have a bunch of named arguments I would like to see all `warn` messages at once, so I have a chance to fix all my invocation line at once. > I'm starting to think Luca's found a regression, since using the explicit > variable name instead of the topic fixes the issue. That seems wrong. I don't know, in the beginning I thought there was a problem with the language specifcation, I mean, something has changed in the `wherre` and topic usage. However, hoping to improve our knowledge or the implementation, I've submitted an issue here <https://github.com/rakudo/rakudo/issues/4878>. Thanks, Luca
