[swift-users] Stored Property, Externally Read-Only

[Bob Davidson]

Great, thanks guys

On Fri, Apr 29, 2016 at 12:00 PM Nate Birkholz <nbirkholz at gmail.com> wrote:

> That's correct.
>
> On Fri, Apr 29, 2016 at 8:52 AM, David Sweeris via swift-users <
> swift-users at swift.org> wrote:
>
>> Yep, declare it like this:
>> public private(set) var lastUpdated: NSDate?
>>
>> At least I’m pretty sure that’s the syntax. I don’t have Xcode in front
>> of me to double-check.
>>
>> HTH
>> - Dave Sweeris
>>
>> On Apr 29, 2016, at 9:52 AM, Bob Davidson via swift-users <
>> swift-users at swift.org> wrote:
>>
>> Hello,
>>
>> Does Swift have a syntax for allowing a stored property to be internally
>> changed by a class/structure, but external access is read-only?
>>
>> For example, my class/structure may have a date property such as
>> “lastUpdated”.  Outside code should have access to read the “lastUpdated”
>> property, but should not be allowed to change it.  Periodically, my class
>> may perform an “update” and would internally change the value of
>> “lastUpdated”.
>>
>> The only way I see to support this with a private property and a
>> computed, get-only property:
>>
>> private var internalLastUpdated: NSDate?
>> var lastUpdated: NSDate? { return internalLastUpdated }
>>
>> This there a better way?
>>
>> Thanks,
>> Bob Davidson
>>
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>>
>>
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>
>
> --
> Nate Birkholz
>
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