pair_comparator

class pair_comparator#( type T = pair ) extends comparator#(T)

singleton Provides strategies to compare pairs.

T	optional The type of a pair object to be compared. The default is pair (with its default parameters).

Summary

pair_comparator	singleton Provides strategies to compare pairs.
Types
this_type	The shorthand of pair_comparator #(T).
Functions
new	protected Creates a new comparator.
get_instance	static Returns the singleton instance of this comparator.
eq	virtual Returns 1 if two pairs are equal.
lt	virtual Returns 1 if x is less than y.

typedef pair_comparator#( T ) this_type

The shorthand of pair_comparator #(T).

protected function new()

protected Creates a new comparator.

static function this_type get_instance()

static Returns the singleton instance of this comparator.

The singleton instance.

virtual function bit eq( T x,
T y )

virtual Returns 1 if two pairs are equal.

x	A pair.
y	Another pair.

If x.first is equal to y.first and x.second is equal to y.second, then returns 1. Otherwise, returns 0.

virtual function bit lt( T x,
T y )

virtual Returns 1 if x is less than y. Compares x.first and y.first. If equal, then compares x.second and y.second.

x	A pair.
y	Another pair.

Returns 1 if x is less than y. Otherwise, returns 0.