Personally I find typealias useful for giving a friendly name to long types
and informative names to types in general. This applies to generic types as
much as non-generic, e.g.:
typealias Vec4 = (T, T, T, T)
typealias Mat4 = (Vec, Vec, Vec, Vec)
Further I would like to be able to add
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>- What is your evaluation of the proposal?
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> Really useful addition
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>- Is the problem being addressed significant enough to warrant a
>change to Swift?
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> Yes, it is a limitation of the current language that you can't do this.
> You can get round the limitation using a
What is your evaluation of the proposal?
+1. Especially for forcing the alias side of the declaration to explicitly
keep track of type constraints.
Is the problem being addressed significant enough to warrant a change to Swift?
Yes. Previously, one could "work around" this by declaring a 0-case
Hello Swift community,
The review of SE-0048 "Generic Type Aliases" begins now and runs through March
29, 2016. The proposal is available here:
https://github.com/apple/swift-evolution/blob/master/proposals/0048-generic-typealias.md
Reviews are an important part of the Swift evolution process.
