The Objective-C dispatch model is based on Smalltalk.
I meant the low-level dispatch of methods; the application binary interface that Objective-C uses to communicate with the APIs that make up almost the entire OS X GUI API. You can't mix that with the ABI for Windows API or any Linux toolkit (except GNUStep).
Most OSX apps and services still aren't even written in Objective-C
Most OS-X apps aren't written in Objective-C? Really? Come on. If it was written specifically for OS X or iOS then it's almost guaranteed to be in Objective-C.
You can compile Objective-C using the gnu compiler and have been able to for ages.
Nobody says you can't. But the only real useful thing you can with that is link to GNUStep.
Swift is an amalgam of many different programming languages and styles, including Rust. None of which have anything specific to do with OSX/iOS about them.
At the high-level you are right but on the low-level it's specifically designed to interface with Objective-C APIs which exist in OSes from only one manufacturer. You can't separate Swift from that. The fact that it's an amalgam of OS X specific technology makes it unsuitable for other OSes. It doesn't really have that much in common with Rust either.
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I meant the low-level dispatch of methods; the application binary interface that Objective-C uses to communicate with the APIs that make up almost the entire OS X GUI API. You can't mix that with the ABI for Windows API or any Linux toolkit (except GNUStep).
Most OS-X apps aren't written in Objective-C? Really? Come on. If it was written specifically for OS X or iOS then it's almost guaranteed to be in Objective-C.
Nobody says you can't. But the only real useful thing you can with that is link to GNUStep.
At the high-level you are right but on the low-level it's specifically designed to interface with Objective-C APIs which exist in OSes from only one manufacturer. You can't separate Swift from that. The fact that it's an amalgam of OS X specific technology makes it unsuitable for other OSes. It doesn't really have that much in common with Rust either.