[swift-users] Cleaner way than if let initialization?

Daniel Tartaglia danielt1263 at gmail.com
Thu Aug 4 14:41:16 CDT 2016


That’s not possible. stringFromDate requires an NSDate, but dob is an optional<NSDate>

> On Aug 4, 2016, at 2:59 PM, Saagar Jha <saagar at saagarjha.com> wrote:
> 
> As such, there shouldn’t be a need for an if; `let dobString = serverDateFormatter.stringFromDate(dob)` should be sufficient.
> 
> Saagar Jha
> 
> 
> 
>> On Aug 4, 2016, at 11:55, Zhao Xin via swift-users <swift-users at swift.org <mailto:swift-users at swift.org>> wrote:
>> 
>> It can't be done by ?? as stringFromDate(Date) returns String instead of String?
>> 
>> Zhaoxin
>> 
>> 
>> On Fri, Aug 5, 2016 at 1:42 AM, Jeff Kelley via swift-users <swift-users at swift.org <mailto:swift-users at swift.org>> wrote:
>> That’s where I would use the ?? operator:
>> 
>> let dobString = serverDateFormatter.stringFromDate(dob) ?? ""
>> 
>> 
>> Jeff Kelley
>> 
>> SlaunchaMan at gmail.com <mailto:SlaunchaMan at gmail.com> | @SlaunchaMan <https://twitter.com/SlaunchaMan> | jeffkelley.org <http://jeffkelley.org/>
>>> On Aug 4, 2016, at 1:32 PM, Daniel Tartaglia via swift-users <swift-users at swift.org <mailto:swift-users at swift.org>> wrote:
>>> 
>>> Currently I do stuff like this:
>>> 
>>> let dobString: String
>>> if let dob = dob {
>>> 	dobString = serverDateFormatter.stringFromDate(dob)
>>> }
>>> else {
>>> 	dobString = ""
>>> }
>>> 
>>> Is there a better, more idiomatic, way to do this sort of thing?
>>> 
>>> _______________________________________________
>>> swift-users mailing list
>>> swift-users at swift.org <mailto:swift-users at swift.org>
>>> https://lists.swift.org/mailman/listinfo/swift-users <https://lists.swift.org/mailman/listinfo/swift-users>
>> 
>> 
>> _______________________________________________
>> swift-users mailing list
>> swift-users at swift.org <mailto:swift-users at swift.org>
>> https://lists.swift.org/mailman/listinfo/swift-users <https://lists.swift.org/mailman/listinfo/swift-users>
>> 
>> 
>> _______________________________________________
>> swift-users mailing list
>> swift-users at swift.org <mailto:swift-users at swift.org>
>> https://lists.swift.org/mailman/listinfo/swift-users
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-users/attachments/20160804/28435093/attachment.html>


More information about the swift-users mailing list