Perl quick note

How to comment

#

=begin — — =cut

__DATA__

– comment till end. — —

Data type

$ -> Scalar @ -> Array % -> Hashed

Note

Every statement must end with semicolon (;)

Example Data type

$name=’Amit’; # Scalar

$var=<<EOF; This is a multi line line code. EOF

print $var;

@myArray=(1,2.25,2e5,’Amit’);

print “First index of myArrary is $myArray[0]”;

Memory Address of Scalar

my $name=’Amit’; my $memAddOfName=$name;

print $memAddOfName;

Size of Array

my @myArray=(1,2.25,2e5,’Amit’);

my $size1=$#myArray+1; my $size2=@myArrary; my $size3=scalar @myArrary;

Array

@days=qw/mon tue wed thu fri sat sun/; print “last day of week is $days[-1]”;