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

[Chris Lattner]

> On Mar 17, 2016, at 11:08 AM, Douglas Gregor via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
>> On Mar 17, 2016, at 1:27 AM, Nicholas Maccharoli via swift-evolution <swift-evolution at swift.org <mailto: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?

The intention was for this to be included as part of SE-0003.  If it wasn’t, then that was an accidental omission.  Do we really need a full proposal for that?

-Chris

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