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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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12345678910111213141516171819202122#include <iostream>#include <vector>#include <algorithm>#include <ranges>
// Constrained parametervoid show(std::integral auto n) { std::cout << "value: " << n << '\n';}
int main() { std::integral auto n = 7; // constrained variable show(n); std::vector<int> v = {5, 2, 9, 1, 4}; std::ranges::sort(v); std::cout << "sorted:"; for (int x : v) std::cout << ' ' << x; std::cout << std::endl; return 0;}