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Re^3: How many man-hours would you estimate you have invested in learning Perl?

by blue_cowdawg (Monsignor)
on Apr 09, 2013 at 13:59 UTC ( #1027746=note: print w/ replies, xml ) Need Help??


in reply to Re^2: How many man-hours would you estimate you have invested in learning Perl?
in thread How many man-hours would you estimate you have invested in learning Perl?

      #!/usr/bin/perl -w is not something you should use. Specifically the -w in there will enable warnings for ALL code, which can include modules which were expressly written to run correctly without warnings (like Coro).

Not sure I follow your argument. I want warnings turned on. It has saved my butt many a time and yes I'm aware of the drawbacks.


Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg


Comment on Re^3: How many man-hours would you estimate you have invested in learning Perl?
Re^4: How many man-hours would you estimate you have invested in learning Perl?
by SuicideJunkie (Priest) on Apr 09, 2013 at 16:04 UTC

    Sure, you want warnings turned on... for your own code. That's what use warnings is for.

    Why would you want to use a global setting to cause other modules to throw warnings even though they are operating as intended? (as in the example)

      For one example, "-w" catches all kinds of data errors, from premature EOF to non-numbers where you expect numbers, when you pass a file handle to someone else's code. You'll get false positives, but you will also get a hint where the problem lies when you are getting unexpected results. Fix the ones you care about, remove the "-w" when you're done, and there you go. Monstrosities like "strictures", which turn on all warnings but only in your code, will not only miss these errors, but complain about non-problems.

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