Returns a random element of the collection, using the given generator as a source for randomness.
Mac Catalyst 13.0+Beta
The random number generator to use when choosing a random element.
A random element from the collection. If the collection is empty, the method returns nil.
Call randomElement(using:) to select a random element from an array or another collection when you are using a custom random number generator. This example picks a name at random from an array:
Complexity: O(1) if the collection conforms to RandomAccessCollection; otherwise, O(n), where n is the length of the collection.
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