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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// PROSE‑ONLY GAP EXAMPLE – std::execution preview (P2300)// This file does not compile on the pinned toolchain because the// execution library is not yet available. It is registered with// book_gap so that readers can enable it with BOOK_ENABLE_GAPS=ON.
/*#include <execution>#include <iostream>#include <numeric>
int main() { // Create a sender that runs a lambda on a thread pool. auto snd = std::execution::schedule(std::execution::thread_pool{}) | std::execution::then([](){ return 42; }); // Block until the result is ready. int result = std::execution::sync_wait(snd); std::cout << "result = " << result << "\n"; return 0;}*/