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The GUI is an issue for all the non-platform languages.. It took a lot of effort for Java with average results. Python's Qt wrappers seems to be more successful

• pjmlp 7y ago
  On Rust it goes beyond that, because borrow checker semantics still aren't productive in typical GUI programming patterns, like self referencial structs from event handlers, leading to Rc<RefCell<>> and clone() calls everywhere. Not saying that it won't improve, just stating the current state. Even with reactive UIs as way to get around those callbacks, relm isn't as easy as Fabulous, SwiftUI, Elm, with the caveat that reactive UIs are heavier on the memory allocator.