Rustly 10.0.0-rc

This package has been deprecated as it is legacy and has critical bugs.

This is a prerelease version of Rustly.

There is a newer version of this package available.
See the version list below for details.

dotnet add package Rustly --version 10.0.0-rc

NuGet\Install-Package Rustly -Version 10.0.0-rc

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Rustly" Version="10.0.0-rc" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Rustly" Version="10.0.0-rc" />
                    

                            Directory.Packages.props

<PackageReference Include="Rustly" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Rustly --version 10.0.0-rc

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Rustly, 10.0.0-rc"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Rustly@10.0.0-rc

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Rustly&version=10.0.0-rc&prerelease
                    

                            Install as a Cake Addin

#tool nuget:?package=Rustly&version=10.0.0-rc&prerelease
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Rustly (v10.0.0-rc)

Rust-inspired Result<T, E>, Option<T>, and Unit types for C#. Replace exceptions with explicit, composable error handling. Zero-allocation value types.

Installation

dotnet add package Rustly --version 10.0.0-rc

Types

Type	Description
`Result<T, E>`	Success (`Ok`) or error (`Err`) — discriminated union
`Option<T>`	`Some(T)` or `None` — nullable alternative
`Unit`	Void replacement for `Result<Unit, E>`

Usage

Result<T, E>

using Rustly;

Result<int, string> Divide(int a, int b)
{
    if (b == 0)
        return Result<int, string>.Err("Division by zero");
    return Result<int, string>.Ok(a / b);
}

var result = Divide(10, 2);

// Pattern matching
string message = result.Match(
    ok: value => $"Result: {value}",
    err: error => $"Error: {error}"
);

// Chaining
var doubled = Divide(10, 2)
    .Map(x => x * 2)
    .UnwrapOr(0);

// Composition
var final = Divide(10, 2)
    .AndThen(x => Divide(x, 3))
    .MapErr(e => $"Pipeline failed: {e}");

Result<Unit, E> (void operations)

using Rustly;

Result<Unit, string> SaveFile(string path)
{
    // ... operation ...
    return Result<Unit, string>.Ok(Unit.Value);
}

SaveFile("/tmp/data.txt")
    .InspectErr(e => Console.WriteLine($"Save failed: {e}"));

Option<T>

using Rustly;

Option<string> FindUser(int id)
{
    if (id == 1)
        return Option<string>.Some("Admin");
    return Option<string>.None;
}

// Safe access
string name = FindUser(1).UnwrapOr("Unknown");

// Chaining
var greeting = FindUser(1)
    .Map(n => $"Hello, {n}!")
    .UnwrapOr("Hello, stranger!");

// Pattern matching
FindUser(42).Match(
    some: user => Console.WriteLine($"Found: {user}"),
    none: () => Console.WriteLine("Not found")
);

API Reference

Result<T, E>

Method	Description
`Ok(T)`	Create success result
`Err(E)`	Create error result
`IsOk` / `IsErr`	Check variant
`Unwrap()`	Get success value (unsafe)
`UnwrapErr()`	Get error value (unsafe)
`UnwrapOr(T)`	Get value or default
`UnwrapOrElse(Func<E, T>)`	Get value or compute default
`Map(Func<T, U>)`	Transform success value
`MapErr(Func<E, F>)`	Transform error value
`AndThen(Func<T, Result<U, E>>)`	Chain operations
`OrElse(Func<E, Result<T, F>>)`	Recover from errors
`Inspect(Action<T>)`	Side-effect on Ok
`InspectErr(Action<E>)`	Side-effect on Err
`Match(Func<T, U>, Func<E, U>)`	Pattern match
`ToOption()`	Convert Ok→Some, Err→None

Option<T>

Method	Description
`Some(T)`	Create option with value
`None`	Empty option
`IsSome` / `IsNone`	Check variant
`Unwrap()`	Get value (unsafe)
`UnwrapOr(T)`	Get value or default
`UnwrapOrElse(Func<T>)`	Get value or compute default
`Map(Func<T, U>)`	Transform value
`AndThen(Func<T, Option<U>>)`	Chain operations
`Inspect(Action<T>)`	Side-effect on Some
`Match(Func<T, U>, Func<U>)`	Pattern match

Product	Compatible and additional computed target framework versions.
.NET	net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.
.NET Core	netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard2.1 is compatible.
MonoAndroid	monoandroid was computed.
MonoMac	monomac was computed.
MonoTouch	monotouch was computed.
Tizen	tizen60 was computed.
Xamarin.iOS	xamarinios was computed.
Xamarin.Mac	xamarinmac was computed.
Xamarin.TVOS	xamarintvos was computed.
Xamarin.WatchOS	xamarinwatchos was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

.NETStandard 2.1
- No dependencies.
net10.0
- No dependencies.

NuGet packages (5)

Showing the top 5 NuGet packages that depend on Rustly:

Package	Downloads
Slotly.Core Core types for the Slotly plugin framework: IPlugin, IPluginManifest, PluginState, PluginError, IPluginContext.	1.8K
Rustly.Json System.Text.Json converters for Rustly Option, Result, and EnumValue. Includes source generators for AOT-friendly serialization. Part of the Rustly ecosystem.	1.5K
Rustly.Json.Newtonsoft Newtonsoft.Json converters for Rustly Option, Result, and EnumValue enums. Part of the Rustly ecosystem.	1.1K
Rustly.Configuration IConfiguration binding for Rustly types. RBind() handles Option and EnumValue object format seamlessly. Part of the Rustly ecosystem.	1.0K
TunnelForge.Tun Cross-platform TUN adapter abstraction for .NET. Unified ITunAdapter interface for Windows (WinTun) and Linux (/dev/net/tun). Error handling via Rustly Result<T, E> — no exceptions.	885

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
10.6.4	936	4/28/2026
10.6.3	234	4/16/2026
10.6.2	241	4/16/2026
10.6.2-rc6	258	4/16/2026
10.6.2-rc5	304	4/15/2026
10.6.1	176	4/15/2026
10.5.0	221	4/15/2026
10.4.0	237	4/15/2026
10.3.1	229	4/14/2026
10.2.1	667	4/14/2026
10.2.0	1,234	4/13/2026
10.1.1	129	4/13/2026
10.1.0	140	4/13/2026
10.0.3	132	4/13/2026
10.0.2	239	4/8/2026
10.0.1	132	4/8/2026
10.0.0	129	4/8/2026
10.0.0-rc2	122	4/8/2026
10.0.0-rc	125	4/8/2026

EN:
Version 10.0.0-rc:
- Result<T, E> — discriminated union for success/error with Map, MapErr, AndThen, OrElse, Unwrap.
- Option<T> — nullable alternative with Map, AndThen, UnwrapOr, IsSome/IsNone.
- Unit — void replacement for use in Result<Unit, E>.
- Full XML documentation.

RU:
Версия 10.0.0-rc:
- Result<T, E> — размеченное объединение для успеха/ошибки с Map, MapErr, AndThen, OrElse, Unwrap.
- Option<T> — альтернатива nullable с Map, AndThen, UnwrapOr, IsSome/IsNone.
- Unit — замена void для использования в Result<Unit, E>.
- Полная XML-документация.

Rustly 10.0.0-rc

Rustly (v10.0.0-rc)

Installation

Types

Usage

Result<T, E>

Result<Unit, E> (void operations)

Option<T>

API Reference

Result<T, E>

Option<T>

.NETStandard 2.1

net10.0

NuGet packages (5)

GitHub repositories