Function HttpCodeStr

library/cpp/http/misc/httpcodes.h:82–84

TStringBuf HttpCodeStrEx(int code) noexcept;

inline TStringBuf HttpCodeStr(int code) noexcept {
    return HttpCodeStrEx(code).Skip(4);
}

inline bool IsHttpCode(int code) noexcept {
    return HttpCodeStrEx(code).data() != HttpCodeStrEx(0).data();