You can do something like this:
someOptionalCollection?.forEach { item in
item.doSomething()
}
Or this:
(someOptionalCollection as? [SomeType])?.forEach { item in
item.doSomething()
}
Jeff Kelley
slauncha...@gmail.com | @SlaunchaMan <https://twitter.com/SlaunchaMan> |
jeffkelley.org <http://jeffkelley.org/>
> On Feb 9, 2017, at 4:26 PM, Rick Mann via swift-users <swift-users@swift.org>
> wrote:
>
> Is there any concise way to write the following?
>
> if let collection = someOptionalCollection
> {
> for item in collection
> {
> }
> }
>
> I can imagine more complicated things, too:
>
> if let collection = someOptionalCollection as? [SomeType]
> {
> for item in collection
> {
> }
> }
>
> It would be nice to be able to just attempt to iterate on an optional
> collection (or Sequence?) and not have to write the enclosing if block
>
> Thanks!
>
> --
> Rick Mann
> rm...@latencyzero.com
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