I agree with the valid points that were already rasied:
- use File::Spec (or, I might add, File::Basename) to do this - don't reinvent the wheel.
- just re-organize the code, put the shared code (i.e. the reg-exp, in this case) in a subroutine, and call that from two different routines
However, my curiosity was piqued about how to go about this, if the need did come up somehow, even though I think solution #2 would be the simplest/best answer most (all?) of the time...
So I came up with this snippet using closures, as you mentioned
for my $wheel (qw/basename dirname/)
{
no strict 'refs';
*$wheel = sub
{
my ($dir) = shift;
my ($path, $name) = ($dir =~ m{(.*)/([^/]*)$});
if ($wheel eq 'basename')
{
return $name;
}
else
{
return $path;
}
};
}
my $path = dirname('/tmp/foo/bar');
my $name = basename('/tmp/foo/bar');
print "$path/$name\n";
Works for me...
Update: Expunged the OPs leaning toothpicks, since I am attributing the snippet to myself ;-)
Update: Or this:
for my $funcname (qw/basename dirname/)
{
no strict 'refs';
*$funcname = sub
{
my ($dir) = shift;
my ($path, $name) = ($dir =~ m{(.*)/([^/]*)$});
if ($funcname eq 'basename')
{
return $name;
}
else
{
return $path;
}
};
}
my $path = dirname('/tmp/foo/bar');
my $name = basename('/tmp/foo/bar');
print "$path/$name\n";
--
3dan
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