[swift-evolution] guard let x = x

[Pyry Jahkola]

> On 31 Oct 2016, Xiaodi Wu wrote:
> 
> An alternative that would seem to satisfy some objections is to have a distinct "unwrap" statement--as in: "unwrap x else { ... }".

True. The `let`, on the other hand, has the minor upside that it's naturally substituted with `var` where in-place mutation is needed:

    guard let value, var collection else { ... }
    collection.append(value)
    // ...

Disclaimer: I don't know if this is a realistic usage scenario but it seems more natural to Swift, in my view.

— Pyry

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