if let key = key, value = dict[key] {
...whatever...
}
seems to work fine without introducing a new construct
-- E, waving hi to John
> On Dec 22, 2015, at 4:37 AM, John Holdsworth via swift-evolution
> <swift-evolution@swift.org> wrote:
>
> This isn’t the most compelling of ideas but a couple of times I’ve found
> myself writing:
>
> if let value = key != nil ? dict[key] : nil {…
>
> and was wondering if the syntax could be:
>
> if let value = dict[key?] {…
>
> The key for dictionaries could be made optional in stdlib but this is
> probably best implemented in the compiler for safety.
>
> Cheers
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