result.hpp File Reference

Minimal expected<T, E>: the hot path never throws, it returns Result. More...

#include "fastmm/core/config_macros.hpp"
#include <new>
#include <type_traits>
#include <utility>

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Classes
struct	fastmm::Unexpected< E >
class	fastmm::Result< T, E >
class	fastmm::Result< void, E >
	Result<void, E>: success carries nothing. More...

Namespaces
namespace	fastmm

Functions
template<class E >
constexpr Unexpected< std::decay_t< E > >	fastmm::fail (E &&e) noexcept

Detailed Description

Minimal expected<T, E>: the hot path never throws, it returns Result.

Result<ClientOrderId, RejectReason> r = ctx.send(order); if (!r) return r.error(); use(r.value());

Errors are constructed via fastmm::fail(e) so that Result<int, int> is unambiguous.