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# collectionView(_:numberOfItemsInSection:)

Asks your data source object for the number of items in the specified section.

```
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
```

## Parameters

`collectionView`

The collection view requesting this information.

`section`

An index number identifying a section in `collectionView`. This index value is 0-based.

## Return Value

The number of items in `section`.

## Discussion

---

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