# Introduction

## Seja bem-vindo à

### ![Introdução](https://255869331-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1z9EbKasQ5B1GnApi4%2F-M1z9FySHMR0ed1TX3vC%2F-M1z9HdqDxJK33adrEuh%2Flogo%20tango.png?generation=1583755130161970\&alt=media)

## Destaques

#### Utilize *pattern matching* com valores opcionais e valores `Either`

```csharp
Option<int> optionalValue = 10;
int value = optionalValue.Match(
        methodWhenSome: number => number,
        methodWhenNone: () => 0);

Either<bool, int> eitherValue = 10;
int value = eitherValue.Match(
        methodWhenRight: number => number,
        methodWhenLeft: boolean => 0);
```

#### Crie processos contínuos utilizando Then e Catch

```csharp
Continuation<string, int> continuation = 5;

continuation.Then(value => value + 4)
            .Then(value => 
                  {
                    if( value % 2 == 0)
                        return value + 5;
                    else
                        return "ERROR";
                  })
            .Then(value => value + 10)
            .Catch(fail => $"{fail} catched");
```

#### Crie processos contínuos utilizando pipeline!

```csharp
continuation 
    >  (value => value + 4)
    >  (value => 
       {
          if( value % 2 == 0)
              return value + 5;
          else
              return "ERROR";
       })
    >  (value => value + 10)
    >= (fail => $"{fail} catched")
```

#### Utilize Poderosas Funções de alta ordem!

```csharp
//IEnumerable<int> source = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }
IEnumerable<IEnumerable<int>> result = source.ChunkBySize(3);

//result = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9},  {10} }

var (resultEvens, resultOdds) = 
    source.Partition(value => value % 2 == 0)

//resultEvens = { 2, 4, 6, 8, 10 }
//resultOdds = { 1, 3, 5, 7, 9 }
```

#### Utilize operações para redução!

```csharp
int result = source.Scan(10, IntegerOperations.Add);
//result = {11, 13, 16, 20, 25, 31, 38, 46, 55, 65}
```

#### Utilize Curry e Aplicação Parcial!

```csharp
Func<int, int, int> add =
    (value, value2) => value + value2;

Func<int, Func<int, int>> addCurried = add.Curry();
curriedResult = addCurried(2)(3);

Func<int, int> addPartial = add.PartialApply(2);
int partialResult = addPartial(3);
```

#### Aproveite o *QuickDelegateCast*!

```csharp
using static Tango.Functional.QuickDelegateCast;

int SampleAdd(int value1, int value2)
    => value1 + value2;

F<int, int, int>(SampleAdd).Curry();
F<int, int, int>(SampleAdd).PartialApply(1);
```

## Totalmente Gratuita

A **Tango** é completamente gratuita, tanto a biblioteca quanto sua documentação, além disso, você pode baixar seu PDF para ler offline!

![Capa do livro](https://255869331-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1z9EbKasQ5B1GnApi4%2F-M1z9FySHMR0ed1TX3vC%2F-M1z9IJ7gUi2D6EpMnYe%2Fcover-rotated-pt-50.jpg?generation=1583755130567637\&alt=media)

Faça download do livro da documentação :

* [Formato PDF](https://www.gitbook.com/download/pdf/book/gabrielschade/tango-br)
* [Formato mobi](https://www.gitbook.com/download/mobi/book/gabrielschade/tango-br)
* [Formato ePub](https://www.gitbook.com/download/epub/book/gabrielschade/tango-br)

## Índice

Aqui você encontra todos os tópicos disponíveis nesta documentação.

### Começando

* [Recado do desenvolvedor](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Final%20Remarks/From%20me,%20the%20developer.html)
* [O que é a Tango?](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Getting%20Started/What%20is%20Tango.html)
* [Por onde começar? ](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Getting%20Started/Where%20to%20start.html)

### Instalação

* [Instalação via NuGet](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Installation/Based%20on%20NuGet.html)
* [Instalação manual](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Installation/Add%20Manually.html)

### Conceitos

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Introduction.html)
* [Utilizando comparação de padrões (Pattern Matching)](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Pattern%20Matching.html)
* [Valores Opcionais](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Optional%20Values.html)
* [Valores "Ou um ou outro"](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Either%20Values.html)
* [Saindo do void para o Unit](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/From%20void%20to%20Unit.html)
* [Delegates Func e Action](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Function%20and%20Action.html)
* [Utilizando operações encadeadas para processos contínuos](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Using%20Chainable%20Operations%20in%20a%20Continuation%20Flow.html)
* [Currying e Aplicação Parcial](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Concepts/Currying%20and%20Partial%20Application.html)

### Funcional

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Functional/Introduction.html)
* [Currying](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Functional/Currying.html)
* [Aplicação Parcial](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Functional/PartialApplication.html)
* [Extensões](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Functional/FunctionExtensions.html)
* [Cast Rápido para Delegates](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Functional/cast-rapido-para-delegates.html)

### Operações

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/Introduction.html)
* [Operações com Booleans](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/Bool.html)
* [Operações com Inteiros](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/Int.html)
* [Operações com Decimais](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/Decimal.html)
* [Operações com Doubles](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/Double.html)
* [Operações com Strings](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Operations/String.html)

### Tipos

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Types/Introduction.html)
* [Unit](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Types/Unit.html)
* [`Option<T>`](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Types/Option/Introduction.html)
* [`Either<TLeft, TRight>`](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Types/Either/Introduction.html)
* [`Continuation<TFail, TSuccess>`](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Types/Continuation/Introduction.html)

### Módulos

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Introduction.html)
* [Option](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option.html)
  * [Apply](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/apply.html)
  * [AsEnumerable](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/asenumerable.html)
  * [Bind](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/bind.html)
  * [Count](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/count.html)
  * [Exists](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/exists.html)
  * [Filter](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/filter.html)
  * [Fold](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/fold.html)
  * [FoldBack](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/foldback.html)
  * [Iterate](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/iterate.html)
  * [Map](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/map.html)
  * [OfNullable](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/ofnullable.html)
  * [ToArray](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/toarray.html)
  * [ToList](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/tolist.html)
  * [ToNullable](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Option/tonullable.html) &#x20;
* [Either](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either.html)
  * [Exists](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/exists.html)
  * [Iterate](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/iterate.html)
  * [Fold](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/fold.html)
  * [FoldBack](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/foldback.html)
  * [Map](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/map.html)
  * [Swap](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/swap.html)
  * [ToTuple](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Either/totuple.html)
* [Collection](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection.html)
  * [Append](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/append.html)
  * [Choose](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/choose.html)
  * [ChunkBySize](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/chunkbysize.html)
  * [Collect](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/collect.html)
  * [CompareWith](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/comparewith.html)
  * [CountBy](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/countby.html)
  * [Concat](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/concat.html)
  * [Distinct](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/distinct.html)
  * [Empty](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/empty.html)
  * [Exists](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/exists.html)
  * [Exists2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/exists2.html)
  * [Filter](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/filter.html)
  * [FindIndex](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/findindex.html)
  * [Fold](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/fold.html)
  * [Fold2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/fold2.html)
  * [FoldBack](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/foldback.html)
  * [FoldBack2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/foldback2.html)
  * [ForAll](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/forall.html)
  * [ForAll2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/forall2.html)
  * [ForAll3](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/forall3.html)
  * [Head](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/head.html)
  * [HeadAndTailEnd](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/headandtailend.html)
  * [Range](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/range.html)
  * [Generate](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/generate.html)
  * [Initialize](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/initialize.html)
  * [Iterate](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/iterate.html)
  * [Iterate2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/iterate2.html)
  * [IterateIndexed](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/iterateindexed.html)
  * [IterateIndexed2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/iterateindexed2.html)
  * [Map](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/map.html)
  * [Map2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/map2.html)
  * [Map3](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/map3.html)
  * [MapIndexed](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/mapindexed.html)
  * [MapIndexed2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/mapindexed2.html)
  * [MapIndexed3](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/mapindexed3.html)
  * [Partition](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/partition.html)
  * [Permute](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/permute.html)
  * [Pick](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/pick.html)
  * [Reduce](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/reduce.html)
  * [ReduceBack](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/reduceback.html)
  * [Replicate](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/replicate.html)
  * [Scan](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/scan.html)
  * [Scan2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/scan2.html)
  * [ScanBack](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/scanback.html)
  * [ScanBack2](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/scanback2.html)
  * [Tail](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/tail.html)
  * [TryFind](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/tryfind.html)
  * [TryPick](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/trypick.html)
  * [Unzip](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/unzip.html)
  * [Unzip3](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/unzip3.html)
  * [Zip](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/zip.html)
  * [Zip3](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Modules/Collection/zip3.html)

### Extensões

* [Introdução](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Extensions/Introduction.html)
* [Extensões para Enum](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Extensions/Enum%20Extensions.html)
* [Construtor de EqualityComparer](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Extensions/EqualityComparerBuilder.html)
* [Módulos como extensão](https://github.com/gabrielschade/tango-br/tree/973dafe9d6a8dbad594ebb5c6d71c46ff5727a5a/Extensions/Modules%20as%20Extensions.html)

![Tango](https://255869331-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1z9EbKasQ5B1GnApi4%2F-M1z9FySHMR0ed1TX3vC%2F-M1z9IJNBGGUqIsF0N0n%2Flogo%20tango%20branco.png?generation=1583755130375316\&alt=media)