Re: Swift : iterating over NSArrayController arrangedObjects
Re: Swift : iterating over NSArrayController arrangedObjects
- Subject: Re: Swift : iterating over NSArrayController arrangedObjects
- From: Roland King <email@hidden>
- Date: Sun, 21 Jun 2015 21:53:05 +0800
> On 21 Jun 2015, at 21:44, Devarshi Kulshreshtha <email@hidden> wrote:
>
> I have an array controller which stores managed objects of entity
> 'Student', I am trying to iterate over its content using below code:
>
> for (index, element) in downloadingFilesArrayController.arrangedObjects{
>
> // want to do some useful things on element
>
> }
>
> for some reasons it is showing compilation error:
>
> 'Type AnyObject does not conform to protocol SequenceType'
>
> Any ideas on how can fix it?
You’re trying to iterate an array of something and put each element into a tuple of ( index, element ), that’s not going to work.
Either
for element in downlaodFileArrayController.arrangedObects {}
or
for (index, element ) in downloadingFilesArrayControler.arrangedObjects.enumerate() {}
If you’re on Swift 1.2 I think it’s enumerate( downloadingFilesArrayController.arrangedObjects ) instead of the enumerate on the end.
Can’t say the error message makes any sense to me however, not that the one I get in Xcode 7 makes much more sense.
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