parity_scale_codec

Struct Ref

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pub struct Ref<'a, T: EncodeLike<U>, U: Encode>(/* private fields */);
Expand description

Reference wrapper that implement encode like any type that is encoded like its inner type.

§Example

fn foo<T: EncodeLike<u8>>(t: T) -> T {
    store_t(Ref::from(&t)); // Store t without moving it, but only using a reference.
    t
}

fn store_t<T: EncodeLike<u8>>(t: T) {
}

Trait Implementations§

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impl<'a, T: EncodeLike<U>, U: Encode> Deref for Ref<'a, T, U>

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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<'a, T: EncodeLike<U>, U: Encode> From<&'a T> for Ref<'a, T, U>

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fn from(x: &'a T) -> Self

Converts to this type from the input type.
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impl<'a, T: EncodeLike<U>, U: Encode> EncodeLike<U> for &Ref<'a, T, U>

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impl<'a, T: EncodeLike<U>, U: Encode> EncodeLike<U> for Ref<'a, T, U>

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impl<'a, T: EncodeLike<U>, U: Encode> WrapperTypeEncode for Ref<'a, T, U>

Auto Trait Implementations§

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impl<'a, T, U> Freeze for Ref<'a, T, U>

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impl<'a, T, U> RefUnwindSafe for Ref<'a, T, U>
where T: RefUnwindSafe, U: RefUnwindSafe,

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impl<'a, T, U> Send for Ref<'a, T, U>
where T: Sync, U: Send,

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impl<'a, T, U> Sync for Ref<'a, T, U>
where T: Sync, U: Sync,

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impl<'a, T, U> Unpin for Ref<'a, T, U>
where U: Unpin,

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impl<'a, T, U> UnwindSafe for Ref<'a, T, U>
where T: RefUnwindSafe, U: 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, X> Encode for X
where T: Encode + ?Sized, X: WrapperTypeEncode<Target = T>,

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fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more
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fn using_encoded<R, F>(&self, f: F) -> R
where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.
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fn encode(&self) -> Vec<u8> ⓘ

Convert self to an owned vector.
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fn encode_to<W>(&self, dest: &mut W)
where W: Output + ?Sized,

Convert self to a slice and append it to the destination.
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fn encoded_size(&self) -> usize

Calculates the encoded size. 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, 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> EncodeLike<&&T> for T
where T: Encode,

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impl<T> EncodeLike<&T> for T
where T: Encode,

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impl<T> EncodeLike<&mut T> for T
where T: Encode,

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impl<T> EncodeLike<Arc<T>> for T
where T: Encode,

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impl<T> EncodeLike<Box<T>> for T
where T: Encode,

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impl<T> EncodeLike<Rc<T>> for T
where T: Encode,