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

[Saagar Jha]

Ahh…then optional chaining is the way to go: `let dobString = serverDateFormatter?.stringFromDate(dob) ?? ""`

Saagar Jha



> On Aug 4, 2016, at 12:41, Daniel Tartaglia <danielt1263 at gmail.com> wrote:
> 
> 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 <mailto: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 <https://lists.swift.org/mailman/listinfo/swift-users>
>> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-users/attachments/20160804/2470fd8c/attachment.html>