Thanks for that and am not aware of such a context reasoning

One more question
for (my $i = 0; $i < @molecules; $i ++) {
Instead of the above 
my $num_elements = scalar(@molecules);
for (my $i = 0; $i < $num_elements; $i++) {

[download]

will that bring any performance improvement or the number of elements of an array is stored internally ( in some scalar ) and there is no need to evaluate it again ?

Thanks again for the reply! :)

In reply to Re^6: Deleting specific array elements by matrixmadhan
in thread Deleting specific array elements by joec_

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