Suppose I have a value type representing some collection that internally uses dynamically allocated class instances to store its data (e.g. in form of a tree). When I assign (copy) an instance of the value type to another variable, I want an independent deep copy of that data to be created (I do not want copy-on-write behavior). How can I do that in Swift? In C++ I would create a copy constructor and overloaded assignment operator for that purpose. Are there corresponding language features or some replacement of them in Swift?
Joe_Groff
(Joe Groff)
2
Swift does not currently let you override copying behavior. Copy-on-write is the preferred mechanism for maintaining independent state between copies of a value.
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