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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_a11y | ||
| bevy_animation | ||
| bevy_app | ||
| bevy_asset | ||
| bevy_audio | ||
| bevy_color | ||
| bevy_core | ||
| bevy_core_pipeline | ||
| bevy_derive | ||
| bevy_dev_tools | ||
| bevy_diagnostic | ||
| bevy_dylib | ||
| bevy_dynamic_plugin | ||
| bevy_ecs | ||
| bevy_encase_derive | ||
| bevy_gilrs | ||
| bevy_gizmos | ||
| bevy_gltf | ||
| bevy_hierarchy | ||
| bevy_input | ||
| bevy_internal | ||
| bevy_log | ||
| bevy_macro_utils | ||
| bevy_math | ||
| bevy_mikktspace | ||
| bevy_pbr | ||
| bevy_picking | ||
| bevy_ptr | ||
| bevy_reflect | ||
| bevy_render | ||
| bevy_scene | ||
| bevy_sprite | ||
| bevy_state | ||
| bevy_tasks | ||
| bevy_text | ||
| bevy_time | ||
| bevy_transform | ||
| bevy_ui | ||
| bevy_utils | ||
| bevy_window | ||
| bevy_winit | ||