Returns the most recently set value for the specified key.
- macOS 10.11+
A key whose value you set previously using the
Value(_: for Animated Key:)
The last value set for the key.
Use this method to retrieve floating-point values that relate to laying out the contents of your collection view. The key you specify is a string that you define and that has some meaning to your layout’s implementation. At points during an interactive transition, you can assign new values to that key using the