Method joined

lib/matplotlib/cbook.py:895–897

Return whether *a* and *b* are members of the same set.

(self, a, b)

                    mapping[elem] = set_a

    def joined(self, a, b):
        """Return whether *a* and *b* are members of the same set."""
        return (self._mapping.get(a, object()) is self._mapping.get(b))

    def remove(self, a):
        """Remove *a* from the grouper, doing nothing if it is not there."""