All math builtins take and return float. If you have an int, cast it first with as float (see Chapter 3).
And it gets worse. P2900 doesn’t even support class invariants — they’re “deferred to a future proposal.” Eiffel had class invariants in 1988. The D language has had in/out/invariant contracts since 2001 — twenty-five years before C++26. As Sean Baxter, author of the Safe C++ proposal (P3390), put it: “Contracts check for bugs. They don’t prevent bugs. A bounds-checked access that traps is still a denial of service.” Baxter proposed an actual Rust-inspired borrow checker for C++. It wasn’t adopted.，更多细节参见新收录的资料
$ Assert end of line。新收录的资料对此有专业解读
В популярном эмирате ОАЭ начался пожар из-за падения обломков БПЛА02:01，详情可参考新收录的资料
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