I have noticed the folling: instead of using (scalar(@arr)) to indicate the number of ellements in an array it is possble to use $#arr. It seems that $# is a value 1 less then the scalar value.
@arr=('A', 'B', 'C', 'D', 'E', 'F', 'G');
instead of writing:
for(my $i=0; $i<(scalar(@arr)); $i++)
..one could make things little easier by writing:
for(my $i=0; $i<=$#arr; $i++)
What is this $# variable really, and is it correct to use it as shown above. I mean could it cause any problems if one uses $#x instead of scalar(x)?
What is this