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A Tour of C++ for experienced programmers, as if C++26 is the only version that ever existed.
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123456789101112131415161718192021#include <vector>#include <array>#include <span>#include <print>
void print_span(std::span<const int> s) { std::print("span elements:"); for (int v : s) { std::print(" {}", v); } std::println("");}
int main() { std::vector<int> v{1, 2, 3}; std::array<int,3> a{{4,5,6}}; print_span(v); print_span(a); return 0;}