¶template <typename... T>
auto system_error(int error_code,
                  format_string<T...> fmt,
                  T&&... args)
    -> std::system_error

Description

\rstConstructs :class:`std::system_error` with a message formatted with ``fmt::format(fmt, args...)``. error_code* is a system error code as given by ``errno``. *Example**:: // This throws std::system_error with the description // cannot open file 'madeup': No such file or directory // or similar (system message may vary). const char* filename = "madeup"; std::FILE* file = std::fopen(filename, "r"); if (!file) throw fmt::system_error(errno, "cannot open file '{}'", filename);\endrst

Declared at: third_party/fmt/include/fmt/format.h:3964

Templates

T

Parameters

int error_code

format_string<T...> fmt

T&&... args