Is there a way to access the iterator (I suppose there's no loop index?) in a C++11 range-based for loop? Often we need to do something special with the first element of a container and iterate ove...

I want to iterate through each element in the map<string, int> without knowing any of its string-int values or keys. What I have so far: void output(map<string, int> table) { map<...

I read this documentation for a range-based for loop: The member interpretation is used if the range type has a member named begin and a member named end. This is done regardless of whether the me...

I find myself often with code that looks like this: bool isFirst = true; for(const auto &item: items) { if(!isFirst) { // Do something } // Normal processing isFirst = false; } It seem...

I want to write a function that can be used with an argument that otherwise could directly occur in a range-based loop: template <typename Iterable> void sayIt(const Iterable& stuff) { f...

Suppose we have a plain array (or other container which supports range-based loops): const int N = 8; int arr[N] = {0, 1, 2, 3, 4, 5, 6, 7}; Using indexes or iterators, we can loop over odd elemen...