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Interned

Struct Interned 

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#[repr(transparent)]
pub struct Interned<'a, T: ?Sized>(pub &'a T, pub Private);
Expand description

An Interned value is one that is referentially comparable. That is, the interned value is unique in memory, simplifying its equality and hashing implementation.

Comparing Interned values via PartialOrd or Ord will still dereference to the wrapped pointers, and as such, may produce results inconsistent with PartialEq or Eq.

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§0: &'a T§1: Private

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impl<'a, T: ?Sized> Interned<'a, T>

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pub fn as_ptr(interned: &Self) -> *const T

Gets the internal value as a pointer

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pub fn to_ref(&self) -> &'a T

Gets the internal value as a reference with the interner’s lifetime

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impl<'a, T: ?Sized> Interned<'a, T>

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pub(super) fn new(value: &'a T) -> Self

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impl<'a> AsRef<str> for Interned<'a, str>

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fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.
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impl<T: ?Sized> Clone for Interned<'_, T>

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fn clone(&self) -> Self

Returns a duplicate 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<T: ?Sized + Debug> Debug for Interned<'_, T>

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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<T: ?Sized> Deref for Interned<'_, T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T: ?Sized + Display> Display for Interned<'_, T>

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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<T: ?Sized> Hash for Interned<'_, T>

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: ?Sized + Ord> Ord for Interned<'_, T>

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl<T: ?Sized> PartialEq for Interned<'_, T>

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: ?Sized + PartialOrd> PartialOrd for Interned<'_, T>

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<T: ?Sized> Copy for Interned<'_, T>

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impl<T: ?Sized> Eq for Interned<'_, T>

Auto Trait Implementations§

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impl<'a, T> Freeze for Interned<'a, T>
where T: ?Sized,

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impl<'a, T> RefUnwindSafe for Interned<'a, T>
where T: RefUnwindSafe + ?Sized,

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impl<'a, T> Send for Interned<'a, T>
where T: Sync + ?Sized,

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impl<'a, T> Sync for Interned<'a, T>
where T: Sync + ?Sized,

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impl<'a, T> Unpin for Interned<'a, T>
where T: ?Sized,

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impl<'a, T> UnwindSafe for Interned<'a, T>
where T: RefUnwindSafe + ?Sized,

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T> ToOwned for T
where 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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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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.