updateOrAppend(_:)
Adds the given element to the set unconditionally, either appending it to the set, or replacing an existing value if one with the same id is present.
Declaration
@discardableResult mutating func updateOrAppend(_ item: MarkupOrderedSet.Element) -> MarkupOrderedSet.Element?Parameters
- item:
The value to append or replace.
Return Value
The element this operation replaced, or nil if the operation appended the value to the end of the collection.