[swift-evolution] Generic `typealias`s

Dapeng Gao gdapeng at icloud.com
Fri Dec 4 05:04:45 CST 2015

It would be handy if Swift can support generic `typealias`s, which would probably look like this:

typealias Handler<Element> = [Element] -> Void

One common way to achieve this is to define a generic `struct` and use a nested `typealias`:

struct HandlerWrapper<Element> {
    typealias Hander = [Element] -> Void

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