Hi Anonymous Monk,

The easiest method to determine if an array is empty is to analyze the value it 'equates' to ( true or false ).

#!/usr/bin/perl -w
use strict;

my @array = qw( Bob Carol Mike Katie );

if( @array ) {
  print "\@array is not empty!\n";
}

else {
  print "\@array is empty!\n";
}
[download]

The line if( @array ) is essentially saying 'if the array has a true value'...if it were empty, it would equal false.
You can delete all the elements of an array of by assigning a empty list to it:

#!/usr/bin/perl -w
use strict;

my @array = qw( Bob Carol Mike Katie );

# Delete the contents of the array.
@array = ();

if( @array ) {
  print "\@array is not empty!\n";
}

else {
  print "\@array is empty!\n";
}
[download]

Hope this helps,
-Katie.

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