NSProgress with KVO-based Finish Callbacks

Feb 5th, 2020

Here’s NSProgress subclass that allows block-based callbacks for finishing the progress in a new callback called finishHandler that should work the same as the existing handlers. By default NSProgress (or with Swift just Progress) comes with handlers for resumeing, pausing, and cancellation events, but not for finishing. I don’t know why.

Observing Enums in Swift 1.2 with KVO

May 13th, 2015

Swift 1.2 brought very nice additions to the functionality of the language. Among one of my favorites is that we can now use Key-Value Observing on enum attributes. Here’s an example. Capacities of container are pre-set in our domain, so it makes sense to create an enum to represent the allowed values: