The following code example is taken from the book
C++23 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2026
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <print>
#include <string>
#include <vector>
#include <ranges>
int main()
{
std::vector<std::string> coll{"tic", "tac", "toe", "42", "end"};
std::println("{}", coll);
// split into sub-views of 2 elements (last may have less):
const auto cv = coll | std::views::chunk(2); // const not propagated
for (const auto& sub : cv) { // const not propagated
// modify first element of each subview:
std::println("- process {}", sub);
sub.front() += '*'; // OOPS: \IBcompiles and modifies elements of coll
}
std::println("{}\n", coll);
}