Creating Views using std::ranges::subrange

Using std::ranges::subrange with Non-Standard Containers

Can I use std::ranges::subrange with non-standard containers?

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Yes, you can use std::ranges::subrange with non-standard containers as long as the container provides iterators. The std::ranges::subrange template is designed to be flexible and work with any type of iterator, not just those from standard containers.


To use std::ranges::subrange, your non-standard container must:

  • Provide begin() and end() member functions that return iterators.
  • Have iterators that meet the requirements of the standard iterator concepts.

Example with a Custom Container

Here’s an example of how you might use std::ranges::subrange with a custom container:

#include <iostream>
#include <ranges>
#include <vector>

class CustomContainer {
  using iterator = std::vector<int>::iterator;
  using const_iterator =

  CustomContainer(std::initializer_list<int> list)
    : data_(list) {}

  iterator begin() {
    return data_.begin(); }
  iterator end() {
    return data_.end(); }
  const_iterator begin() const {
    return data_.begin(); }
  const_iterator end() const {
    return data_.end(); }

  std::vector<int> data_;

int main() {
  CustomContainer container{1, 2, 3, 4, 5};
  std::ranges::subrange view{
    container.begin(), container.end()};

  for (int n : view) {
    std::cout << n << ", ";
1, 2, 3, 4, 5,


Using std::ranges::subrange with non-standard containers allows you to:

  • Leverage the powerful range-based algorithms and views.
  • Create subviews of your custom container without modifying it.
  • Maintain compatibility with standard library functions.

Practical Considerations

  • Ensure your container’s iterators comply with the expected iterator concepts.
  • Test thoroughly to make sure your custom iterators work correctly with std::ranges::subrange.

Advanced Usage

For more advanced usage, such as bidirectional or random access iterators, ensure your custom container’s iterators implement the necessary operations (e.g., operator-- for bidirectional, operator[] for random access).

By following these guidelines, you can effectively use std::ranges::subrange with non-standard containers and benefit from the flexibility it provides.

Answers to questions are automatically generated and may not have been reviewed.

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