Many programming languages support a variant of a for loop called for each, that is, repeating a group of statements over the elements of a collection. C++ did not have core language support for this until C++11. The closest feature was the general purpose algorithm from the standard library called std::for_each, that applies a function to all the elements in a range. C++11 brought language support for for each that is actually called range-based for loops. The new C++17 standard provides several improvements to the original language feature.