difference
Sets @self to be the symmetric difference of @self and @other.
The symmetric difference is set @self to contain all values that were either contained in @self or in @other, but not in both. This operation is also called an XOR.
It is allowed for @self and @other to be the same bitset. The bitset will be emptied in that case.
Parameters
other
the GtkBitset
to compute the difference from