Struct parity_scale_codec::Ref
source · pub struct Ref<'a, T: EncodeLike<U>, U: Encode>(_, _);
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§
impl<'a, T: EncodeLike<U>, U: Encode> EncodeLike<U> for &Ref<'a, T, U>
impl<'a, T: EncodeLike<U>, U: Encode> EncodeLike<U> for Ref<'a, T, U>
impl<'a, T: EncodeLike<U>, U: Encode> WrapperTypeEncode for Ref<'a, T, U>
Auto Trait Implementations§
impl<'a, T, U> RefUnwindSafe for Ref<'a, T, U>where T: RefUnwindSafe, U: RefUnwindSafe,
impl<'a, T, U> Send for Ref<'a, T, U>where T: Sync, U: Send,
impl<'a, T, U> Sync for Ref<'a, T, U>where T: Sync, U: Sync,
impl<'a, T, U> Unpin for Ref<'a, T, U>where U: Unpin,
impl<'a, T, U> UnwindSafe for Ref<'a, T, U>where T: RefUnwindSafe, U: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, X> Encode for Xwhere
T: Encode + ?Sized,
X: WrapperTypeEncode<Target = T>,
impl<T, X> Encode for Xwhere T: Encode + ?Sized, X: WrapperTypeEncode<Target = T>,
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
If possible give a hint of expected size of the encoding. Read more
source§fn using_encoded<R, F>(&self, f: F) -> Rwhere
F: FnOnce(&[u8]) -> R,
fn using_encoded<R, F>(&self, f: F) -> Rwhere F: FnOnce(&[u8]) -> R,
Convert self to a slice and then invoke the given closure with it.
source§fn encode_to<W>(&self, dest: &mut W)where
W: Output + ?Sized,
fn encode_to<W>(&self, dest: &mut W)where W: Output + ?Sized,
Convert self to a slice and append it to the destination.
source§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
Calculates the encoded size. Read more