ExactMatcher

Struct ExactMatcher 

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pub struct ExactMatcher<T> { /* private fields */ }
Expand description

Exact equality matcher for cache keys.

This matcher performs exact equality comparison, similar to using get() directly, but is useful in generic code where you need a Matcher implementation.

§Examples

use simple_cacher::*;
use std::time::Duration;

let mut cache = SimpleCacher::new(Duration::from_secs(300));
cache.insert("exact_key".to_string(), "value".to_string());

let matcher = ExactMatcher::new("exact_key".to_string());
if let Ok(entry) = cache.get_by_matcher(&matcher) {
    println!("Found: {}", entry.value());
}

Implementations§

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impl<T> ExactMatcher<T>

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pub fn new(target: T) -> Self

Creates a new exact matcher for the given target value.

§Arguments
  • target - The exact value to match against

Trait Implementations§

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impl<T> Matcher<T> for ExactMatcher<T>
where T: PartialEq,

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fn matches(&self, key: &T) -> bool

Returns true if the given key matches this matcher’s criteria. Read more

Auto Trait Implementations§

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impl<T> Freeze for ExactMatcher<T>
where T: Freeze,

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impl<T> RefUnwindSafe for ExactMatcher<T>
where T: RefUnwindSafe,

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impl<T> Send for ExactMatcher<T>
where T: Send,

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impl<T> Sync for ExactMatcher<T>
where T: Sync,

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impl<T> Unpin for ExactMatcher<T>
where T: Unpin,

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impl<T> UnwindSafe for ExactMatcher<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where 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 T
where 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 T
where 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 T
where 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, U> TryFrom<U> for T
where 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 T
where 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.