Hi,
> On 28 May 2016, at 22:03, Austin Zheng via swift-evolution > <[email protected]> wrote: > > Hello swift-evolution, > > I put together a draft proposal for the variadic generics feature described > in "Completing Generics" as a major objective for Swift 3.x. It can be found > here: > > https://github.com/austinzheng/swift-evolution/blob/az-variadic-generics/proposals/XXXX-variadic-generics.md I’ve only taken a short glance at this (and just like the proposal, I’m damaged by C++11, so my opinion is biased), so here are some thoughts: - I’d prefer head + tail over first + rest, but that’s pretty irrelevant - Often in C++, the need for recursion when using first + rest goes away when you can index into parameter packs (e.g. using integer_sequence) or have fold expressions. - It might occasionally be useful to have multiple parameter packs (or argument packs). In C++ you can do that by wrapping it in a tuple. Do we have / need such an escape hatch? - I have an argument pack. How would I apply a function taking a single argument to each element in the pack? Go via the tuple? - Why is this a separate thing from Tuple itself? It feels so similar; I can convert between them, so why do I need this other thing? Daniel. _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
