[swift-evolution] [Review] SE-0110: Distinguish between single-tuple and multiple-argument function types

[Daniel Duan]

> Vladimir.S via swift-evolution <swift-evolution at ...> writes:

Following your conclusion, should this be legal as well?

let f: () -> Void = { x in print(x) } // f() prints "()"
let f: (Int) -> Void = { x in print(x) } // f(5) prints "5"

In other words, "0 argument" is an impossible scenario?