# Introduction

> [`Tango.Types`](https://github.com/gabrielschade/Tango/tree/master/Tango/Tango/Types)

This is one of the most important namespaces at **Tango**. You can find here the core implementations about functional data types, like `Option`, `Either` and `Continuation`.

In this section you will find the following topics:

* [Unit](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Types/Unit.html)
* [`Option<T>`](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Types/Option/Introduction.html)
* [`Either<TLeft, TRight>`](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Types/Either/Introduction.html)
* [`Continuation<TFail, TSuccess>`](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Types/Continuation/Introduction.html)


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