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# Objective Derive `Hash` for `KeyboardInput`. ## Problem I was [writing code](https://github.com/joshka/bevy_ratatui/pull/13) to take `crossterm` events and republish them as bevy input events. One scenario requires I check if the same key press was happening repeatedly; in a regular terminal we don't get key released events, so I was simulating them. I was surprised to find that I couldn't put `KeyboardInput` into a `HashSet`. ## Work Around My work around was to add a new type that implemented Hash. ```rust #[derive(Deref, DerefMut, PartialEq, Eq)] struct KeyInput(KeyboardInput); impl Hash for KeyInput { fn hash<H>(&self, state: &mut H) where H: Hasher, { self.key_code.hash(state); self.logical_key.hash(state); self.state.hash(state); self.window.hash(state); } } ``` ## Solution A better solution since all members of `KeyboardInput` implement `Hash` is to have it derive `Hash` as well. ## Testing My newtype solution works for its purpose. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: Josh McKinney <joshka@users.noreply.github.com> Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com> |
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Bevy Input
