The Transformation: 70-90% Less Code

See how REslava.Result eliminates boilerplate in real .NET 10 applications:

2.5.1. ❌ BEFORE: Traditional Minimal API

// Manual error handling, validation, and HTTP responses
app.MapPost("/users", async (CreateUserRequest request, IUserService service) =>
{
    // Manual validation
    if (string.IsNullOrWhiteSpace(request.Email))
        return Results.BadRequest(new { error = "Email required" });

    if (!IsValidEmail(request.Email))
        return Results.BadRequest(new { error = "Invalid email" });

    // Manual duplicate checking
    if (await EmailExistsAsync(request.Email))
        return Results.Conflict(new { error = "Email already exists" });

    try
    {
        var user = await service.CreateUserAsync(request);
        return Results.Created($"/users/{user.Id}", user);
    }
    catch (ValidationException ex)
    {
        return Results.BadRequest(new { errors = ex.Errors });
    }
    catch (Exception ex)
    {
        return Results.Problem("Internal server error");
    }
});

2.5.2. ✅ AFTER: REslava.Result Magic

// Clean, declarative, type-safe - 3 lines instead of 25+
app.MapPost("/users", async (CreateUserRequest request) => 
    await CreateUser(request));

// Service layer handles everything elegantly
public async Task<Result<User>> CreateUser(CreateUserRequest request) =>
    await Result<CreateUserRequest>.Ok(request)
        .Ensure(r => !string.IsNullOrWhiteSpace(r.Email), "Email required")
        .Ensure(r => IsValidEmail(r.Email), "Invalid email format")
        .EnsureAsync(async r => !await EmailExistsAsync(r.Email), "Email already exists")
        .BindAsync(async r => await _userService.CreateUserAsync(r))
        .WithSuccess("User created successfully");

🚀 Result: 70-90% less code, 100% type-safe, automatic HTTP responses, rich error context!

---