Which subroutine or method was called?

QM has asked for the wisdom of the Perl Monks concerning the following question:

I'm having a funny problem, and suspect that my uses are stepping on each other. How to determine which subroutine is actually getting called?

For instance:

use Time::HiRes qw(sleep);
sleep(5);
[download]

This imports sleep over the builtin. How do I check that the sleep I call is the sleep I want?

And while we're at it, how to do the same for a method -- that is, I can say: $object->method();, but where does that method live?

-QM
--
Quantum Mechanics: The dreams stuff is made of

Comment on Which subroutine or method was called? Select or Download Code

Replies are listed 'Best First'.
Re: Which subroutine or method was called? by toolic (Bishop) on Oct 09, 2012 at 12:19 UTC
To remove all doubt, don't export any functions, then explicitly call the one from the Time::HiRes module: `use Time::HiRes (); # prevents exporting any functions, although POD s +ays none are exported anyway Time::HiRes::sleep(5);` [download]	[reply] [d/l]
Re: Which subroutine or method was called? by 2teez (Vicar) on Oct 09, 2012 at 13:50 UTC
OR, you could use CORE to call bulitin like so: `use strict; use warnings; use Time::HiRes qw(); # just like others said Time::HiRes::sleep(2); # module sleep function CORE::sleep(2); # bulitin sleep function` [download] Then to see what went down call your script like so `perl -MO=Deparse perlscript.pl`then you see this: `use Time::HiRes (); use warnings; use strict 'refs'; &Time::HiRes::sleep(2); sleep 2;` [download] If you tell me, I'll forget. If you show me, I'll remember. if you involve me, I'll understand. --- Author unknown to me	[reply] [d/l] [select]
Re: Which subroutine or method was called? by Anonymous Monk on Oct 09, 2012 at 12:12 UTC
`$ perl -MDDS -MTime::HiRes=sleep -e " Dump\&sleep" $CODE1 = \&Time::HiRes::sleep; $ perl -MDDS -MTime::HiRes=sleep -le " print main->can(q/sleep/)" CODE(0x9a38ac) $ perl -MDDS -MTime::HiRes=sleep -e " Dump( main->can(q/sleep/) )" $CODE1 = \&Time::HiRes::sleep;` [download] Maybe see also module_info/pfunc	[reply] [d/l]
Re^2: Which subroutine or method was called? by QM (Parson) on Oct 15, 2012 at 13:19 UTC
`DDS` would be? -QM -- Quantum Mechanics: The dreams stuff is made of	[reply] [d/l]
Re^3: Which subroutine or method was called? by toolic (Bishop) on Oct 15, 2012 at 13:56 UTC
DDS is an alias for Data::Dump::Streamer	[reply]
Re^2: Which subroutine or method was called? by QM (Parson) on Oct 18, 2012 at 12:50 UTC
`Can't locate object method "ARRAY" via package "B::SPECIAL" at C:/stra +wberry/perl/site/lib/Data/Dump/Streamer.pm line 3698.` [download] This seems to be a (recurring?) bug. I see it also in Ubuntu 10.4, Perl 5.10.1, as well as the above Strawberry Perl 5.16.1. -QM -- Quantum Mechanics: The dreams stuff is made of	[reply] [d/l]

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