Struct LazyRef

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pub struct LazyRef<'a, T>
where T: Type + ?Sized,
{ /* private fields */ }
Expand description

A lazy initialized reference type for a Type.

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impl<'a, T> LazyRef<'a, T>
where T: Type + ?Sized,

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pub const unsafe fn from_raw(raw: &'a [u8]) -> LazyRef<'a, T>

Creates a new LazyRef from a raw byte slice.

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pub fn new(val: <T as Type>::Ref<'a>) -> LazyRef<'a, T>

Creates a new LazyRef from an initialized reference type.

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pub unsafe fn with_raw( val: <T as Type>::Ref<'a>, raw: &'a [u8], ) -> LazyRef<'a, T>

Creates a new LazyRef from an initialized reference type and its raw byte slice.

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pub fn get(&self) -> &<T as Type>::Ref<'a>

Returns the reference value.

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pub const fn raw(&self) -> Option<&'a [u8]>

Returns the raw byte slice if it exists.

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impl<'a, T> AsRef<<T as Type>::Ref<'a>> for LazyRef<'a, T>
where T: Type + ?Sized,

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fn as_ref(&self) -> &<T as Type>::Ref<'a>

Converts this type into a shared reference of the (usually inferred) input type.
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impl<'a, T> Clone for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Clone,

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fn clone(&self) -> LazyRef<'a, T>

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<'a, T> Debug for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Debug,

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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, T> Deref for LazyRef<'a, T>
where T: Type + ?Sized,

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type Target = <T as Type>::Ref<'a>

The resulting type after dereferencing.
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fn deref(&self) -> &<LazyRef<'a, T> as Deref>::Target

Dereferences the value.
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impl<'a, T> Display for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Display,

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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, T> Hash for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Hash,

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

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<'a, T> Ord for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Ord,

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fn cmp(&self, other: &LazyRef<'a, T>) -> 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<'a, T> PartialEq for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: PartialEq,

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fn eq(&self, other: &LazyRef<'a, T>) -> 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<'a, T> PartialOrd for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: PartialOrd,

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fn partial_cmp(&self, other: &LazyRef<'a, T>) -> 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<'a, T> Eq for LazyRef<'a, T>
where T: Type + ?Sized, <T as Type>::Ref<'a>: Eq,

Auto Trait Implementations§

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impl<'a, T> !Freeze for LazyRef<'a, T>

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impl<'a, T> !RefUnwindSafe for LazyRef<'a, T>

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impl<'a, T> Send for LazyRef<'a, T>
where <T as Type>::Ref<'a>: Send, T: ?Sized,

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impl<'a, T> !Sync for LazyRef<'a, T>

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impl<'a, T> Unpin for LazyRef<'a, T>
where <T as Type>::Ref<'a>: Unpin, T: ?Sized,

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impl<'a, T> UnwindSafe for LazyRef<'a, T>
where <T as Type>::Ref<'a>: UnwindSafe, T: ?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<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more