Result

Install

dotnet add package NuvyntraLabs.NET.Result

Package ID: NuvyntraLabs.NET.Result

NuvyntraLabs.NET.* is a class library, not a Plugin.Maui.* package. The install command applies after 0.1.1 is published. Until then, reference the project in the hub submodule.

Example

Result<User> found = Result<User>.Success(user);
Result<User> missing = Result<User>.Failure(new NotFoundError("User is missing."));
Result done = Result.Success();
string label = found.Match(value => value.Name, error => error.Code);

Overview

NuvyntraLabs.NET.Result returns a success value or an Error. Prefer ErrorOr when the host wants a larger result library. Value throws InvalidOperationException on failure. Error throws on success. Failure(null) throws ArgumentNullException. Match is the only functional method. There is no Map, Bind, or LINQ operator, and no ASP.NET Core ProblemDetails adapter.

Capabilities

• Result<T> is a success value or an Error. Result is success or an Error with no value.
• Error requires a Code and a Message.
• ValidationError uses code validation and adds a property name.
• NotFoundError uses code not_found.
• Match is the read path. There is no Map, Bind, or LINQ operator.

Related in Shared libraries

• NuvyntraLabs.NET.GuardNull, empty, positive, and range checks at a public boundary
• NuvyntraLabs.NET.DataMaskMask a phone, PAN, card, or connection string before it is logged
• NuvyntraLabs.NET.TimeKitBusiness days, month and quarter bounds, Unix time, and IANA zones