I made a program to calculate the total width/height of views (sometimes I want the total width, sometimes I want the total height). The only catch is: If I'm calculating the width, I want to add a...

Consider the following snippet of code class A { var value: Int? } let a: A? = A() let kp = \A.value a?[keyPath: kp] = 10 print(a?.value) This works perfectly and Optional(10) is printed as ...

I have an array of enum cases, where each case has a keyPath property, which returns an AnyKeyPath matching the classes property with the same name as the enum case: protocol PathAccessor: CodingK...

I have a string like this: $string = 'one/two/three/four'; which I turn it into a array: $keys = explode('/', $string); This array can have any number of elements, like 1, 2, 5 etc. How can I ...

I've been trying to find an example, but what I've seen doesn't work in my case. What would be the equivalent of the following code: object.addObserver(self, forKeyPath: "keyPath", options: [.ne...

It seems like it should be possible to use an array of KeyPaths as sort keys to sort an array of Swift structs using an arbitrary number of sort keys. Conceptually, it's simple. You define an arra...

I'm having some trouble getting the new KVO syntax right. According to the Apple documentation: Create an observer for the key path and call the observe(_:options:changeHandler) method. For mor...

I'm aware of the limitations of generics in Swift and why they exist so this is not a question about compiler errors. Rather, I occasionally run into situations that seem as though they should be p...

I was very happy to find Swift 3's implementation of #keyPath(), which will eliminate typos and enforce at compile time that the key path actually exists. Much better than manually typing Strings. ...

I would like to convert these strings into a combined nested array: array( 'item1:item2:itemx', 'item1:item2:itemy', 'itemz' ) To array( 'item1' => array( 'item2' => array( 'itemx' =&g...