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# fadeDuration()

The time, in seconds, that newly added images take to “fade-in” to the rendered representation of the tiled layer.

```
class func fadeDuration() -> CFTimeInterval
```

## Discussion

The default implementation returns 0.25 seconds.

## See Also

  [Core Animation Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CoreAnimation_guide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40004514)


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