Struct NoDrop 

pub struct NoDrop<T: Default>(/* private fields */);

Wrap a type so that is Drop impl is never called.

Useful when storing types like Imbalance which would trigger their Drop implementation whenever they are written to storage as they are dropped after being serialized.

Trait Implementations

impl<T> Decode for NoDrop<T>

where T: Decode + Default,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T: Default + Default> Default for NoDrop<T>

fn default() -> NoDrop<T>

Returns the “default value” for a type.

impl<T: Default> Drop for NoDrop<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T> Encode for NoDrop<T>

where T: Encode + Default,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T> MaxEncodedLen for NoDrop<T>

where T: MaxEncodedLen + Default,

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl<T: Default> SuppressedDrop for NoDrop<T>

type Inner = T

The wrapped whose drop function is ignored.

fn as_ref(&self) -> &Self::Inner

fn as_mut(&mut self) -> &mut Self::Inner

fn into_inner(self) -> Self::Inner

fn new(inner: Self::Inner) -> Self

impl<T> TypeInfo for NoDrop<T>

where T: TypeInfo + 'static + Default,

type Identity = NoDrop<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T> DecodeWithMemTracking for NoDrop<T>

where T: DecodeWithMemTracking + Default,

impl<T> EncodeLike for NoDrop<T>

where T: Encode + Default,