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Tying special variables considered horrible and useful

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From:

Steffen Mueller

Date:

January 18, 2012 14:34

Subject:

Tying special variables considered horrible and useful

Message ID:

4F1748DB.7080409@cpan.org

On 01/18/2012 11:04 PM, Father Chrysostomos via RT wrote:
> On Wed Jan 18 12:53:06 2012, rcaputo wrote:
>> Interoperability requires cooperation from the author, and he's been
>> known to break it for modules he doesn't like.  Ask Paul Evans and/or
>> Matt Trout about this:
>>
>> https://metacpan.org/source/MLEHMANN/AnyEvent-
>> 6.13/lib/AnyEvent.pm#L1396
>
> Tying %INC could solve that. :-)

Other fun aside: Tying special variables can actual be very useful. I 
was surprised to learn that tying %SIG works just fine. It's very useful 
for cases of "huge codebase" and "where are my warnings going" or 
similar problems. IOW Devel::TrackSIG will tie %SIG (if loaded early) 
and tell you where the current value of $SIG{$whatever} comes from for 
debugging at any place where you otherwise expect an exception out warning.

Doesn't matter up to a ~ 10k line code base, I guess, but at some point, 
it can get pretty hairy to figure this out manually.

--Steffen

Thread Previous | Thread Next

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Matt S Trout

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Nicholas Clark via RT

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Rocco Caputo via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Matt S Trout
[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Matt S Trout

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Aristotle Pagaltzis
Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Rocco Caputo

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Matt S Trout
Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Paul LeoNerd Evans

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Paul LeoNerd Evans

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Joel Roth

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Joel Roth

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Nicholas Clark

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by H.Merijn Brand

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Nicholas Clark

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Rocco Caputo

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Rocco Caputo

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Ricardo Signes

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by demerphq

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Paul LeoNerd Evans

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Vladimir V. Perepelitsa

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Leon Timmermans

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Vladimir V. Perepelitsa

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by demerphq

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by demerphq

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Ævar Arnfjörð Bjarmason

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Vladimir V. Perepelitsa

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by demerphq

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Aristotle Pagaltzis

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

RE: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by vadim.konovalov

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Marc Lehmann
Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Paul LeoNerd Evans

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Tying special variables considered horrible and useful by Steffen Mueller

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Nicholas Clark

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Joel Roth

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Joel Roth

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride

Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride
Re: [perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride
[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Darin McBride
[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by dmcbride@cpan.org via RT
[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

[perl #108470] Term::ReadLine should use AE instead of Tk for event looping by Father Chrysostomos via RT

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Matt S Trout
Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Matt S Trout

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Paul LeoNerd Evans

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Aristotle Pagaltzis

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Paul LeoNerd Evans

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Matt S Trout
Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Leon Timmermans

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead of Tkforeventlooping by Steffen Mueller

Re: [perl #108470] Term::ReadLine should use AE instead ofTkforevent looping by Marc Lehmann

Re: [perl #108470] Term::ReadLine should use AE instead ofTkforevent looping by Ricardo Signes

Re: [perl #108470] Term::ReadLine should use AE instead of Tk forevent looping by Matt S Trout

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