> +1. In general, I think we should allow implicit arguments, without requiring
> the closure to use all the implicit $n variables like we do today. These
> should all be valid:
>
> let _: () -> () = {}
> let _: (Int) -> () = {}
> let _: (Int, Int) -> Int = { 5 }
> let _: (Int, Int) -> Int = { $0 }
> let _: (Int, Int) -> Int = { $1 }
+1. This would be excellent.
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