[swift-evolution] Removing explicit use of `let` from Function Parameters

[Douglas Gregor]

> On Mar 17, 2016, at 1:27 AM, Nicholas Maccharoli via swift-evolution <swift-evolution at swift.org> wrote:
> 
> ​As a follow-up to proposal SE-0003​: "Removing var from Function Parameters" being accepted,
> I think it might make sense to disallow explicitly declaring function parameters with the `let` keyword since function parameters are immutable by default.
> 
> Basically disallow writing functions like this:
> 
> func foo(let i: Int)  { ... }
> 
> and only allow the function above to be expressed as this:
> 
> func foo(i: Int) { … }

This makes perfect sense to me. Want to write up a proposal?

	- Doug


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