8706d82bd4
https://wg21.link/#support `[[nodiscard]]` should be applied to functions where discarding the return value is most likely a correctness issue. - https://libcxx.llvm.org/CodingGuidelines.html#apply-nodiscard-where-relevant The following was implemented in this patch: - [x] `<compare>` - [x] `<corotine>` - [x] `<initializer_list>` - [x] Integer comparisons --------- Co-authored-by: Hristo Hristov <zingam@outlook.com> Co-authored-by: A. Jiang <de34@live.cn>