dwave.optimization.model.Symbol.maybe_equals#

Symbol.maybe_equals(other)#

Compare to another node.

This method exists because a complete equality test can be expensive.

Parameters:: other – Another node in the model’s directed acyclic graph.

Returns: integer

Supported return values are:

0—Not equal (with certainty)
1—Might be equal (no guarantees); a complete equality test is necessary
2—Are equal (with certainty)

Examples

This example compares IntegerVariable symbols of different sizes.

>>> from dwave.optimization import Model
>>> model = Model()
>>> i = model.integer(3, lower_bound=0, upper_bound=20)
>>> j = model.integer(3, lower_bound=-10, upper_bound=10)
>>> k = model.integer(5, upper_bound=55)
>>> i.maybe_equals(j)
1
>>> i.maybe_equals(k)
0