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Thanks... sorry for the stupid mistake. Here's the corrected code:
```#!/usr/bin/perl -w
# summation examples from SICP done in Perl

use strict;
use warnings;

my \$result = &sum_integers(1, 3);
print "sum_integers(1, 3) equals \$result\n";
\$result = &cube(3);
print "cube(3) equals \$result\n";
\$result = &sum_cubes(1, 3);
print "sum_cubes(1, 3) equals \$result\n";
\$result = &sum_cubes2(1, 3);
print "sum_cubes2(1, 3) equals \$result\n";

sub sum_integers {
my (\$a, \$b) = @_;
if (\$a > \$b) { return(0); }
else { return( \$a + &sum_integers((\$a + 1), \$b) ); }
}

sub cube {
my (\$a) = @_;
return( \$a * \$a * \$a );
}

sub sum_cubes {
my (\$a, \$b) = @_;
if (\$a > \$b) { return(0); }
else { return( &cube(\$a) + &sum_cubes((\$a + 1), \$b) ); }
}

sub sum {
my (\$term, \$a, \$next, \$b) = @_;
if (\$a > \$b) { return(0); }
else { return( \$term->(\$a) + &sum( \$term, (\$next->(\$a)), \$next, \$b
+) ); }
}

sub inc {
my (\$n) = @_;
return( \$n + 1 );
}

sub sum_cubes2 {
my (\$a, \$b) = @_;
return( &sum(\&cube, \$a, \&inc, \$b) );
}

In reply to Re: Re:^3 Passing subroutines as arguments by mvaline
in thread Passing subroutines as arguments by mvaline

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 davido needs to close laptop to board flight home from yapc. [davido]: I'll look into it in a few hours probably. [davido]: when i do get to that point I think I'll do it in a vm snapshot just in case. :) [oiskuu]: tye, you were right: loginuid/sessionid are part of task struct if compiled with AUDITSYSCALL. I have some doubts if you should actually depend on that feature. [Corion]: oiskuu: Depends on what you want to do with that information [tye]: I'm not depending on that feature. But I could in this environment. I'm using getlogin(). shrug [Corion]: For benign logging (which user started this DB instance), it's OK [tye]: We use auditd for security monitoring. So we can rely on auditing being enabled. I'm not sure who would want to not be able to audit. Maybe some VM inside another system with audit? [SuicideJunkie]: spies would want a system to not be able to audit.

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