A Vision for Variadic Generics in Swift
The design and implementation of variadic generics is well underway. Equipping Swift with a set of features to enable variable-length abstraction will be done incrementally over multiple individual language evolution proposals. The first of these proposals has already been pitched as Value and Type Parameter Packs.
A vision for variadic generics in Swift discusses the overarching design for this set of language proposals. This will give you an idea of the bigger picture, how parameter packs provide the foundation for its future directions, and what sorts of use cases are ultimately supported by this design.
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