4 ms·

Thanks, those were interesting to read about. It doesn't seem like something that would come up in the for loop case, though.

• mehrdadn 7y ago
  I mean, you can imagine proxies for stuff beside bools and matrices... template<class It> struct iterator_range { It b, e; It begin() const { return b; } It end() const { return e; } }; template<class It> iterator_range<It> make_iterator_range(It b, It e) { iterator_range<It> r = { b, e }; return r; } template<class T> struct endian_reversed_iterator { T *p; struct reference { T *p; operator T() const { return boost::endian::endian_reverse(*p); } reference &operator =(T const &other) const { *p = boost::endian::endian_reverse(other); } }; endian_reversed_iterator(T *p) : p(p) { } reference operator *() { reference r = { p }; return r; } endian_reversed_iterator &operator++() { ++p; return *this; } bool operator!=(endian_reversed_iterator const &other) const { return p != other.p; } }; int main() { unsigned arr[] = { 1, 2 }; for (auto x : make_iterator_range<endian_reversed_iterator<unsigned> >(&arr[0], &arr[2])) { ++x; // whatever } }