FastActivator

.NET Publish Coverage Status

FastActivator is a C# library that provides a faster alternative to the System.Activator class for creating instances of classes.

Purpose

The purpose of FastActivator is to replace the usage of System.Activator with a more efficient implementation, resulting in improved performance when creating instances of classes.

Speed Comparisons

Method Mean Error StdDev Rank Gen0 Allocated
ActivatorCreateInstance 182.80 ns 1.272 ns 1.127 ns 2 0.0401 336 B
FastActivatorCreateInstance 28.27 ns 0.422 ns 0.352 ns 1 0.0115 96 B

In many instances it's about 2x to 10x faster depending on the method used.

Usage

To use FastActivator, follow these steps:

  1. Add a reference to the FastActivator library in your project.

    dotnet add package Fast.Activator

  2. Import the required namespaces:

    using Fast.Activator;

  3. To create an instance of a class using FastActivator, use one of the following methods:

    • CreateInstance<TClass>(params object[] args): Creates an instance of the specified class TClass with the provided arguments, if any.

      var instance = FastActivator.CreateInstance<MyClass>(arg1, arg2);

    • CreateInstance<TClass>(): Creates an instance of the specified class TClass without any arguments.

      var instance = FastActivator.CreateInstance<MyClass>();

    • CreateInstance(Type type, params object[] args): Creates an instance of the specified Type with the provided arguments, if any.

      var instance = FastActivator.CreateInstance(typeof(MyClass), arg1, arg2);

    • CreateInstance(Type type): Creates an instance of the specified Type without any arguments.

      var instance = FastActivator.CreateInstance(typeof(MyClass));

    Note: If the object cannot be created, the methods will return null.

Contributing

Contributions to FastActivator are welcome! If you would like to contribute, please follow these guidelines:

  • Fork the repository and create a new branch for your feature or bug fix.

  • Make your changes and ensure that the tests pass.

  • Submit a pull request describing your changes and the problem they solve.

  • Ensure that your code adheres to the project's coding conventions and style guidelines.

License

FastActivator is released under the Apache 2.0 License.

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