The following code example is taken from the book
C++20 - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2021
The code is licensed under a Creative Commons Attribution 4.0 International License. Creative Commons License

// raw code

#include <vector>
#include <ranges>

void addValInto(const auto& val, auto& coll)

template<typename Coll>   // Note: different order of template parameters
requires std::ranges::random_access_range<Coll>
void addValInto(const auto& val, Coll& coll)

int main()
  std::vector<int> coll;
  addValInto(42, coll);   // ERROR: ambiguous