Initial Course

modules/14_cpp26/include/monadic_expected.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <expected>
+#include <string>
+
+namespace cpp26 {
+
+enum class ErrorCode { NotFound, Invalid };
+
+[[nodiscard]] auto parse_id(const std::string& text) -> std::expected<int, ErrorCode>;
+[[nodiscard]] auto load_user(int id) -> std::expected<std::string, ErrorCode>;
+[[nodiscard]] auto load_user_name(const std::string& text) -> std::expected<std::string, ErrorCode>;
+
+}  // namespace cpp26