I like to separate methods into their own logical extensions so similar methods
are grouped together. I do this mostly with Cocoa Touch where I like all view
life cycle methods to be in the same extension:
extension ViewController {
override func viewDidLoad() {
}
override func viewWillAppear(animated: Bool) {
}
override func viewDidDisappear(animated: Bool) {
}
}
You can document this somewhat by adding a MARK comment:
// MARK: Lifecylce
extension ViewController {
override func viewDidLoad() {
}
override func viewWillAppear(animated: Bool) {
}
override func viewDidDisappear(animated: Bool) {
}
}
What if we made this more self-documenting by elevating this to a language
feature?
extension ViewController named Lifecycle {
override func viewDidLoad() {
}
override func viewWillAppear(animated: Bool) {
}
override func viewDidDisappear(animated: Bool) {
}
}
Other ways:
extension named Lifecycle ViewController { }
extension named “View Lifecycle" ViewController { }
extension ViewController named “Multi word description” { }
For now, this is purely a documenting feature (i.e. Can’t refer to the
extension name dynamically or statically in actual code). I think it plays much
more naturally with Swift than requiring this to be in the comments and would
work across all IDEs and make it easier for people to find a specific extension
as well as making their code more self documenting.
Any thoughts?
Thanks,
Brandon
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