C++ (Cpp) TupleMap::erase Examples

Example #1

File: unionexecutor.cpp Project: AlessandroEmm/voltdb

void ExceptIntersectSetOperator::intersectTupleMaps(TupleMap& map_a, TupleMap& map_b) {
    TupleMap::iterator it_a = map_a.begin();
    while(it_a != map_a.end()) {
        TupleMap::iterator it_b = map_b.find(it_a->first);
        if (it_b == map_b.end()) {
            it_a = map_a.erase(it_a);
        } else {
            it_a->second = std::min(it_a->second, it_b->second);
            ++it_a;
        }
    }
}

Example #2

File: unionexecutor.cpp Project: AlessandroEmm/voltdb

void ExceptIntersectSetOperator::exceptTupleMaps(TupleMap& map_a, TupleMap& map_b) {
    TupleMap::iterator it_a = map_a.begin();
    while(it_a != map_a.end()) {
        TupleMap::iterator it_b = map_b.find(it_a->first);
        if (it_b != map_b.end()) {
            if (it_a->second > it_b->second) {
                it_a->second -= it_b->second;
            }
            else {
                it_a = map_a.erase(it_a);
                continue;
            }
        }
        ++it_a;
    }
}