What is temporary variables and scope in Perl?

In Perl, temporary variables are variables that are defined for short-term use within a specific scope. These variables can hold values that only need to be accessed for a limited time, and they can help manage memory usage effectively. The scope of a variable in Perl refers to the context in which that variable can be accessed and used. Variables can be declared with different scopes: global, package, or lexical (using 'my').

Lexical variables are typically used for temporary storage, meaning they exist only within the block in which they are defined. When the block exits, the temporary variables are destroyed, thus freeing up memory. This is useful in avoiding conflicts with other variables that might have the same name in a broader scope.

my $temp_variable = 10;   # Temporary variable
{
    my $scope_variable = 20; # Lexical variable with block scope
    print "Inside block: $temp_variable, $scope_variable\n"; # Accesses both variables
}
# Outside block, $scope_variable is no longer defined
print "Outside block: $temp_variable\n"; # Only $temp_variable is accessible