Generics in Theory and Practice
summary
Generics explain why the Swift standard library is almost entirely generic: collections like Array/Dictionary/Set hold any element type, global functions such as map filter reduce use type placeholders, and the Mirror initializer surfaces extreme type constraints. Swift 3 ships generic typealiases and syntactic tweaks; proposals for Swift 4 add recursive protocol constraints to link Sequence and SubSequence, nested generics for private internals, and improved existentials to let class+protocol types be used at runtime.
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chapters (5)
- 0:00What is generic programming
- 1:51Collections
- 2:48Global Functions
- 6:07Generics Are Not Cool
- 14:00Conclusion
