# `BCCollectionViewLayoutOperation.layoutCompletionBlock`

*Instance Property*

## Declaration

```swift
var layoutCompletionBlock: (() -> Void)! { get set }
```

```objc
@property (copy) dispatch_block_t layoutCompletionBlock;
```

```python
layoutCompletionBlock() -> dispatch_block_t
setLayoutCompletionBlock_(layoutCompletionBlock: dispatch_block_t)
```