Struct bevy::utils::hashbrown::hash_map::OccupiedError

pub struct OccupiedError<'a, K, V, S, A = Global>
where A: Allocator,
{ pub entry: OccupiedEntry<'a, K, V, S, A>, pub value: V, }
Expand description

The error returned by try_insert when the key already exists.

Contains the occupied entry, and the value that was not inserted.

§Examples

use hashbrown::hash_map::{HashMap, OccupiedError};

let mut map: HashMap<_, _> = [("a", 10), ("b", 20)].into();

// try_insert method returns mutable reference to the value if keys are vacant,
// but if the map did have key present, nothing is updated, and the provided
// value is returned inside `Err(_)` variant
match map.try_insert("a", 100) {
    Err(OccupiedError { mut entry, value }) => {
        assert_eq!(entry.key(), &"a");
        assert_eq!(value, 100);
        assert_eq!(entry.insert(100), 10)
    }
    _ => unreachable!(),
}
assert_eq!(map[&"a"], 100);

Fields§

§entry: OccupiedEntry<'a, K, V, S, A>

The entry in the map that was already occupied.

§value: V

The value which was not inserted, because the entry was already occupied.

Trait Implementations§

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impl<K, V, S, A> Debug for OccupiedError<'_, K, V, S, A>
where K: Debug, V: Debug, A: Allocator,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'a, K, V, S, A> Display for OccupiedError<'a, K, V, S, A>
where K: Debug, V: Debug, A: Allocator,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, K, V, S, A> Freeze for OccupiedError<'a, K, V, S, A>
where V: Freeze, K: Freeze,

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impl<'a, K, V, S, A> RefUnwindSafe for OccupiedError<'a, K, V, S, A>

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impl<'a, K, V, S, A> Send for OccupiedError<'a, K, V, S, A>
where V: Send, K: Send, S: Send, A: Send,

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impl<'a, K, V, S, A> Sync for OccupiedError<'a, K, V, S, A>
where V: Sync, K: Sync, S: Sync, A: Sync,

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impl<'a, K, V, S, A> Unpin for OccupiedError<'a, K, V, S, A>
where V: Unpin, K: Unpin,

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impl<'a, K, V, S, A = Global> !UnwindSafe for OccupiedError<'a, K, V, S, A>

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Gets the TypeId of self. Read more
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fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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