gtk:bitset-difference (bitset other)

bitset -- a gtk:bitset instance
other -- a gtk:bitset instance to compute the difference from

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