Is there any way to persist a Swift closure?

Question

I need to persist a closure but it doesn't seem possible with any persistence methods available in Swift and I can't seem to find any information.

Answer 1

Since the "Code" part of the closure is fixed (compiled) there is no need to persist it, you only need to keep a reference to it with a keyword or some other identifier. This can be achieved using a dictionary with references to functions for example (i.e. a factory of functions).

What actually needs persistence are the variables that are captured by the closure. This is equivalent to parameters of a function.

So basically, you should probably approach your problem differently and define a set of function keywords and parameter lists. You can easily persist those and later "execute" the data by passing the parameters to the factory of functions associated with the keywords.