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Devel::Caller(3pm) User Contributed Perl Documentation Devel::Caller(3pm)


Devel::Caller - meatier versions of "caller"


 use Devel::Caller qw(caller_cv);
 $foo = sub { print "huzzah\n" if $foo == caller_cv(0) };
 $foo->();  # prints huzzah
 use Devel::Caller qw(called_with);
 sub foo { print called_with(0,1); }
 foo( my @foo ); # should print '@foo'


"caller_cv" gives you the coderef of the subroutine being invoked at the call frame indicated by the value of $level
Returns the arguments passed into the caller at level $level
"called_with" returns a list of references to the original arguments to the subroutine at $level. if $names is true, the names of the variables will be returned instead

constants are returned as "undef" in both cases

"called_as_method" returns true if the subroutine at $level was called as a method.


All of these routines are susceptible to the same limitations as "caller" as described in "caller" in perlfunc

The deparsing of the optree performed by called_with is fairly simple-minded and so a bit flaky.

As a version 2.0 of Devel::Caller we no longer maintain compatibility with versions of perl earlier than 5.8.2. Older versions continue to be available from CPAN and backpan.


"caller" in perlfunc, PadWalker, Devel::Peek


Richard Clamp <> with close reference to PadWalker by Robin Houston


Copyright (c) 2002, 2003, 2006, 2007, 2008, 2010, 2013 Richard Clamp. All Rights Reserved.

This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself.

2022-07-30 perl v5.34.0