TIL about faster `Array` operations with `CollectionOfOne` in Swift

Read Faster Array Operations With CollectionOfOne in Swift. Nothing new. Side learning: i..<i is valid range. Empty one.

Looking at implementation of insert(_:, at:) I am thinking if would it be more effective to add specialised version for replacing subrange with single element instead of creating CollectionOfOne:

public mutating func insert(_ newElement: __owned Element, at i: Int) {
    _checkIndex(i)
    self.replaceSubrange(i..<i, with: CollectionOfOne(newElement))
}

Passed the first week of Coursera’s Introduction to TensorFlow for Artificial Intelligence, Machine Learning, and Deep Learning.