sub _update_term_score {
	my ($self, %args) = @_;
	
	# %args = (
	#       term =>   search term
	#       doc_id => document id
	#       count =>  number of times term was found in this document.
	# )
	
	. . .
}

##</code><code>##

sub _update_term_score {
	my ($self, $term, $doc_id, $count) = @_;
	
	#       term   ->   search term
	#       doc_id -> document id
	#       count  ->  number of times term was found in this document.
	
	. . .
}	

##</code><code>##

my %hash_var = (
	param1 => 'value 1',
	param2 => 'value 2',
	param3 => 'value 3',
);

##</code><code>##

my %hash_var = (
	'param1' => 'value 1',
	'param2' => 'value 2',
	'param3' => 'value 3',
);