Result
A library to aid error handling in situations where
throw-ing is not appropriate. A type of Result<T, E>
holds either a T or a E, T being the successful
type and E being the error type.
License: MIT (see LICENSE.txt)
Example
#include "result/result.hpp"
#include <system_error>
auto may_result_in_error() -> result::Result<size_t, std::error_code> {
auto e = read();
if (e) {
return result::err(std::error_code{e, std::system_category()});
}
return result::ok(e);
}
auto main(int, char const**) -> int {
auto r = may_result_in_error();
if (r.is_ok()) {
std::cout << "Read " << r.value() << " bytes\n";
}
else {
std::cerr << "Error: "
<< r.error().value()
<< "\n";
}
return 0;
}