Struct egui::util::cache::CacheStorage

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pub struct CacheStorage {
    caches: HashMap<TypeId, Box<dyn CacheTrait>>,
}
Expand description
use egui::util::cache::{CacheStorage, ComputerMut, FrameCache};

#[derive(Default)]
struct CharCounter {}
impl ComputerMut<&str, usize> for CharCounter {
    fn compute(&mut self, s: &str) -> usize {
        s.chars().count()
    }
}
type CharCountCache<'a> = FrameCache<usize, CharCounter>;

let mut cache = cache_storage.cache::<CharCountCache<'_>>();
assert_eq!(cache.get("hello"), 5);

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§caches: HashMap<TypeId, Box<dyn CacheTrait>>

Implementations§

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impl CacheStorage

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pub fn cache<FrameCache: CacheTrait + Default>(&mut self) -> &mut FrameCache

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fn num_values(&self) -> usize

Total number of cached values

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pub fn update(&mut self)

Call once per frame to evict cache.

Trait Implementations§

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impl Clone for CacheStorage

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CacheStorage

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

Formats the value using the given formatter. Read more
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impl Default for CacheStorage

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fn default() -> CacheStorage

Returns the “default value” for a type. Read more

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SerializableAny for Twhere T: 'static + Any + Clone + Send + Sync,