On: Rust 2021: GUI

[andrewmcwatters]

Which is all dealing with retained, mutable data. Period. I'm not making the comment for the sake of pointing out _levels_ of abstraction.

I made the comment because such an abstraction doesn't at all map to reality.

[lmm → andrewmcwatters]

> Which is all dealing with retained, mutable data. Period.

Only if you choose to model your system that way. You can push the same paradigm all the way through: immutable events, and pure functions that transform an event and a previous (immutable) state into a new state.

[andrewmcwatters → lmm]

No, you really can’t, and that’s what all the functional/immutable evangelists don’t get: you can’t.

You’re going to recreate framebuffers and font atlases and invalidate your entire UI every single time? Good joke.

[lmm → andrewmcwatters]

So much for "not pointing out levels of abstraction". Maybe somewhere in the guts of the low-level runtime a mutable framebuffer is being used for now, sure, but I don't care about that any more than I care about whether my processor is jumping vs doing a conditional move.