Questions about this topic? Sign up to ask in the talk tab.

Perl/Basics/Variables and Data Types/Casting

From NetSec
Jump to: navigation, search

Casting is the process of transitioning from one data type to another. This is typically done using curly brackets {} preceeded by a data type designator ($,%, or @).

  • To cast a hash reference back to a hash:
 
my %hash;
my $hashref = \%hash; #create the hash reference
 
my %casted  = %{$hashref}; #Cast back to a hash.
 
  • To cast a list of keys in a hash into an array:
 
my @casted = @{keys %hash};
 
  • To cast a scalar value to an integer:
 
my $integer = int($scalar);