http://www.perlmonks.org?node_id=372123


in reply to Re: Getting Matching Items From An Array
in thread Getting Matching Items From An Array

I'm not so sure there's a huge benefit here. 
my @x;
$x[9] = 1;
print "$#x ", scalar(@x), $/;
print exists $x[2] ? 1 : 0, $/;
print defined $x[2] ? 1 : 0, $/;
                                                                      
+          
$x[2] = undef;
print exists $x[2] ? 1 : 0, $/;
print defined $x[2] ? 1 : 0, $/;
----
9 10
0
0
1
0

[download]

Basically, all you're saying is whether that element was assigned to. That's different from "Is this index within the bounds of the array?", which is tested by if ($i <= $#array).

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

I shouldn't have to say this, but any code, unless otherwise stated, is untested

In Section Tutorials