Wow, this is a very interesting trick. I like it a lot. But it's too bad it doesn't help DProf give useful information for anonymous subs: 
use Carp;
my $i = 0;

sub foo {
     sub {
         local *__ANON__ = "local_subref_" . $i++;
         carp "blokhead";
     };
}

foo()->() for 1 .. 3;

__OUTPUT__

$ perl -d:DProf test.pl 
blokhead at test.pl line 7
        main::local_subref_0() called at test.pl line 12
blokhead at test.pl line 7
        main::local_subref_1() called at test.pl line 12
blokhead at test.pl line 7
        main::local_subref_2() called at test.pl line 12
blokhead at test.pl line 7
        main::local_subref_3() called at test.pl line 12

$ dprofpp tmon.out
Total Elapsed Time = 0.079705 Seconds
  User+System Time = 0.049705 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 ...
 0.00       -  0.020      3        - 0.0066  main::__ANON__
 ...

[download]
Boo!! DProf still plops everything into main::__ANON__. I've run into this problem before trying to profile code that uses liberal amounts of anonymous subs, and it's quite annoying. Unfortunately I don't know enough about the internals of Perl and DProf to figure out a "clever" solution like yours that works for profiling code (other than using other *Prof modules)...

blokhead

In reply to Re: Named anonymous subs by blokhead
in thread Named anonymous subs by ysth

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