As a perl/matlab user, i often need 'any' and 'all' functions. Here is my attempt to write subroutines in perl.

(silly) example:
$res=any { $a<$b } \@vec1, \@vec2;
will return 1 if any two matching elements of the array satisfy the condition in the block.

$res=all { $a<$b } \@vec1, \@vec2;
will return 1 if all pairs satisfy the condition.

(I'm sure there's a better/shorter way to write it and welcome any suggestions)


Thanks for the replies. (+an alterternative below) 
sub any (&$@)
{
    my $code = shift;
    local $A = shift;
    local $B = shift;
    while ((local $a=pop(@$A)) && (local $b=pop(@$B)) ) {
      return 1 if &$code($a,$b);
    }
    return 0;
}

sub all(&$@)
  {
    my $code = shift;
    local $A = shift;
    local $B = shift;
    while ((local $a=pop(@$A)) && (local $b=pop(@$B)) ) {
      return 0 unless &$code($a,$b);
    }
    return 1;
  }

# Some testing:
my @ar1 = 1..10;
my @ar2 = 2..11;

my $res= any { $a<$b } \@ar1, \@ar2;
print "res=$res ==1?\n";

$res= any { $a>$b } \@ar1, \@ar2;
print "res=$res ==0?\n";

$res= any { $a==$b } \@ar1, \@ar2;
print "res=$res ==0?\n";

@ar2=1..10;
$res= all { $a==$b } \@ar1, \@ar2;
print "res=$res ==1?\n";

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In reply to any-all by fundflow

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