To make that even simpler, you could write a subroutine called Sub that takes a coderef argument and records its file and line number and returns an object that when used as a coderef invokes the coderef, but when used as a string returns the filename/linenumber of creation. How's that for slick? I may even have to code that up for a snippet. Usage would be something like: 
my $sub = Sub { my $x = shift; print $x };
$sub->("foo"); # prints foo
print "that was from $sub\n";

[download]
Pretty simple to do.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

update: see Track the filename/line number of an anonymous coderef.

In reply to •Re^5: How to de-reference a coderef? by merlyn
in thread How to de-reference a coderef? by AndyH

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