# Collection

> [`Tango.Modules.CollectionModule`](https://github.com/gabrielschade/Tango/blob/master/Tango/Tango/Modules/Collection/CollectionModule.cs)
>
> [`Tango.Modules.Collection.Linq`](https://github.com/gabrielschade/Tango/blob/master/Tango/Tango/Modules/Collection/Collection.Linq.cs)

This module provides several methods to works with [`IEnumerable<T>`](https://msdn.microsoft.com/pt-br/library/system.collections.ienumerable%28v=vs.110%29.aspx) type.

When possible, the examples will use the extension method format, all of them can be replaced by module method without change any behavior.

> **WARNING**
>
> 1. The `IEnumerable<T>` is a *lazy load* type, this module works with it, but in some cases is necessary an evaluation of the collection. The methods that performs an evaluation are sinalized.
> 2. Some methods appling a given function to more than one collection, in these cases the loop will runs only until reach the size of **smallest** collection.
> 3. Some methods has different parameter order in extension and module versions. It occurs because the *static* methods in modules are optimized to partial application rather than extension methods that wants to improve usability to make a similar `System.Linq` sintax.

## Methods

* [Append](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/append.html)
* [Choose](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/choose.html)
* [ChunkBySize](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/chunkbysize.html)
* [Collect](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/collect.html)
* [CompareWith](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/comparewith.html)
* [CountBy](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/countby.html)
* [Concat](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/concat.html)
* [Distinct](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/distinct.html)
* [Empty](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/empty.html)
* [Exists](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/exists.html)
* [Exists2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/exists2.html)
* [Filter](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/filter.html)
* [FindIndex](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/findindex.html)
* [Fold](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/fold.html)
* [Fold2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/fold2.html)
* [FoldBack](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/foldback.html)
* [FoldBack2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/foldback2.html)
* [ForAll](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/forall.html)
* [ForAll2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/forall2.html)
* [ForAll3](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/forall3.html)
* [Head](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/head.html)
* [HeadAndTailEnd](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/headandtailend.html)
* [Range](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/range.html)
* [Generate](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/generate.html)
* [Initialize](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/initialize.html)
* [Iterate](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/iterate.html)
* [Iterate2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/iterate2.html)
* [IterateIndexed](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/iterateindexed.html)
* [IterateIndexed2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/iterateindexed2.html)
* [Map](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/map.html)
* [Map2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/map2.html)
* [Map3](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/map3.html)
* [MapIndexed](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/mapindexed.html)
* [MapIndexed2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/mapindexed2.html)
* [MapIndexed3](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/mapindexed3.html)
* [Partition](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/partition.html)
* [Permute](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/permute.html)
* [Pick](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/pick.html)
* [Reduce](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/reduce.html)
* [ReduceBack](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/reduceback.html)
* [Replicate](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/replicate.html)
* [Scan](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/scan.html)
* [Scan2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/scan2.html)
* [ScanBack](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/scanback.html)
* [ScanBack2](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/scanback2.html)
* [Tail](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/tail.html)
* [TryFind](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/tryfind.html)
* [Unzip](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/unzip.html)
* [Unzip3](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/unzip3.html)
* [Zip](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/zip.html)
* [Zip3](https://github.com/gabrielschade/tango/tree/379cc4a38ae47796971eb875ec66e7dc053a9081/Modules/Collection/zip3.html)


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