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# filter(_:)

Returns the elements of `self` that satisfy `isIncluded`.

```
func filter(_ isIncluded: @escaping (Self.Elements.Element) -> Bool) -> LazyFilterSequence<Self.Elements>
```

## Discussion> Note: The elements of the result are computed on-demand, as
> the result is used. No buffering storage is allocated and each
> traversal step invokes `predicate` on one or more underlying
> elements.

---

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