That makes perfect sense - thanks. I forgot about the userInfo type!
On Tue, Jan 26, 2016 at 10:31 AM Roland King <r...@rols.org> wrote:
>
> > On 26 Jan 2016, at 23:12, Eric E. Dolecki <edole...@gmail.com> wrote:
> >
> > I have a control which takes an array of dictionaries to construct it's
> UI
> > (as a distinct method).
> >
> > Now I'd like to add a notification to supply the data as well. I'd like
> to
> > pass the data as userInfo.
> >
> > When constructing the observer method, how do I constuct?
> >
> > func weHaveData(notification:NSNoticiation){
> > let dict = notification.userInfo as Array<Dictionary<String,String>>
> > control.loadData(dict)
> > }
> >
> > *Can't convert value of type [NSObject:AnyObject]? to
> > Array<Dictionary<String,String>> in coercion*
> >
> > I've tried without the cast. Is there an easy work around?
> > _______________________________________________
>
>
> the userInfo of an NSNotification is an NSDictionary, so of course you
> can’t cast it to an Array. There’s no workaround, they aren’t the same
> thing at all.
>
> If you want to pass an Array of Dictionaries in the userInfo, you need to
> put it in the userInfo *dictionary* under a key, then retrieve it, then
> cast it.
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