Can you remind me what's the difference? I thought Cocoa was older and Swift is the future, so wouldn't Swift be the most performant and beautiful choice?
Cocoa is the user interface toolkit used by macOS and iOS applications alike (though on iOS it's called Cocoa Touch). Swift is a programming languages that's often used to write Cocoa applications, usually through the AppKit, UIKit, or SwiftUI frameworks.
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Can you remind me what's the difference? I thought Cocoa was older and Swift is the future, so wouldn't Swift be the most performant and beautiful choice?
Cocoa is the user interface toolkit used by macOS and iOS applications alike (though on iOS it's called Cocoa Touch). Swift is a programming languages that's often used to write Cocoa applications, usually through the AppKit, UIKit, or SwiftUI frameworks.
I'll add that I think GP is confusing Cocoa with Objective-C. Swift does replace Objective-C.