rem: unicode_block unicode_block::operator&(const unicode_block &block) const { unicode_block		res;  res.fData[0] = fData[0] & block.fData[0]; res.fData[1] = fData[1] & block.fData[1]; return res;
add: unicode_block::operator&(const unicode_block &block) const { unicode_block result; result.fData[0] = fData[0] & block.fData[0]; result.fData[1] = fData[1] & block.fData[1];  return result;
context: unicode_block unicode_block::operator&(const unicode_block &block) const {	unicode_block		res;		res.fData[0] = fData[0] & block.fData[0];	res.fData[1] = fData[1] & block.fData[1];	return res;}