On May 14, 2015, at 08:40 , William Squires wsqui...@satx.rr.com wrote:
I'd like to know how to properly write a value transformer in Swift.
Something like this, I expect:
class StringNotNilTransformer: NSObject {
static var transformedValueClass: AnyClass { return
Thanks, I didn't even think of that, but yeah, it would be easier. Still, I'd
like to know how to properly write a value transformer in Swift.
On May 12, 2015, at 5:38 PM, Quincey Morris
quinceymor...@rivergatesoftware.com wrote:
On May 12, 2015, at 14:29 , William Squires
On May 12, 2015, at 22:19 , Uli Kusterer witness.of.teacht...@gmx.net wrote:
I think at least one of those should be “message” instead of “messageIsEmpty”
… ?
Indeed — the second one.
I’m also not absolutely sure that a computed static property will have the
desired effect. It may have to
I'm trying to make what should be a fairly simple value transformer. I need to
bind the Enabled state of a control (NSButton in this case, but it could be any
control) to the .isEmpty state of a string. I would think this a common enough
task that an existing value transformer would be
On May 12, 2015, at 2:29 PM, William Squires wsqui...@satx.rr.com wrote:
but the example in the documentation is in ObjC, not Swift, and refers to id,
not to Bools or Strings. Hints, anyone?
‘id’ in Obj-C is ‘AnyObject’ in Swift. You’ll need to use the “as” or “as?”
operator to type-cast
On May 12, 2015, at 15:38 , Quincey Morris
quinceymor...@rivergatesoftware.com wrote:
dynamic var message: String
dynamic var messageIsEmpty: Bool {return String == “”}
static var keyPathsForValuesAffectingMessageIsEmpty: NSSet {return NSSet
(object: messageIsEmpty”)}
FWIW, a Swift-ier
On May 12, 2015, at 14:29 , William Squires wsqui...@satx.rr.com wrote:
class IsNotEmptyTransformer : NSValueTransformer
{
}
but the example in the documentation is in ObjC, not Swift, and refers to id,
not to Bools or Strings. Hints, anyone?
Using a value transformer at all seems like
On 13 May 2015, at 00:38, Quincey Morris quinceymor...@rivergatesoftware.com
wrote:
static var keyPathsForValuesAffectingMessageIsEmpty: NSSet {return NSSet
(object: messageIsEmpty”)}
I think at least one of those should be “message” instead of “messageIsEmpty” …
?
Cheers,
-- Uli Kusterer
