Re: remove_if with a mask

[..] I tried :

template<class Z> struct maskChecker {
     public:
         maskChecker(const vector<bool> &mask) : it(mask.begin()) {}
         bool operator()(Z&) const { return *it ++; }
     private:
         vector<bool>::const_iterator&it;
};

template<class T> template<class Z>
void Selector<T>::compact(vector<Z> &data, const vector<bool> &mask) {
     if (data.size() != mask.size()) throw UnmatchedSize(data.size(),
mask.size());
     typename vector<Z>::iterator end = remove_if(data.begin(),
data.end(), maskChecker<Z>(mask));
     data.erase(end, data.end());
}

This does not compile ...
I know this is about it being initialized by a temporary variable
returned by mask.begin() ..
Should I directly pass a reference to the iterator to the constructor
of maskChecker rather than the vector itself ?