# 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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