Struct parity_scale_codec::Compact

pub struct Compact<T>(pub T);

Compact-encoded variant of T. This is more space-efficient but less compute-efficient.

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for Compact<T>

fn clone(&self) -> Compact<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CompactLen<u128> for Compact<u128>

fn compact_len(val: &u128) -> usize

Returns the compact encoded length for the given value.

impl CompactLen<u16> for Compact<u16>

fn compact_len(val: &u16) -> usize

Returns the compact encoded length for the given value.

impl CompactLen<u32> for Compact<u32>

fn compact_len(val: &u32) -> usize

Returns the compact encoded length for the given value.

impl CompactLen<u64> for Compact<u64>

fn compact_len(val: &u64) -> usize

Returns the compact encoded length for the given value.

impl CompactLen<u8> for Compact<u8>

fn compact_len(val: &u8) -> usize

Returns the compact encoded length for the given value.

impl<T> Debug for Compact<T>where T: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Decode for Compact<()>

fn decode<I: Input>(_input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T> Decode for Compact<T>where T: CompactAs, Compact<T::As>: Decode,

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Decode for Compact<u128>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Decode for Compact<u16>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Decode for Compact<u32>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Decode for Compact<u64>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Decode for Compact<u8>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

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

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

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

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<'de, T> Deserialize<'de> for Compact<T>where T: Deserialize<'de>,

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> Encode for Compact<T>where for<'a> CompactRef<'a, T>: Encode,

fn size_hint(&self) -> usize

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

fn encode_to<W: Output + ?Sized>(&self, dest: &mut W)

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<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<'a, T: 'a> EncodeAsRef<'a, T> for Compact<T>where CompactRef<'a, T>: Encode + From<&'a T>,

type RefType = CompactRef<'a, T>

The reference type that is used for encoding.

impl<'a, T: Copy> From<&'a T> for Compact<T>

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

Converts to this type from the input type.

impl From<Compact<()>> for ()

fn from(x: Compact<()>)

Converts to this type from the input type.

impl From<Compact<u128>> for u128

fn from(x: Compact<u128>) -> u128

Converts to this type from the input type.

impl From<Compact<u16>> for u16

fn from(x: Compact<u16>) -> u16

Converts to this type from the input type.

impl From<Compact<u32>> for u32

fn from(x: Compact<u32>) -> u32

Converts to this type from the input type.

impl From<Compact<u64>> for u64

fn from(x: Compact<u64>) -> u64

Converts to this type from the input type.

impl From<Compact<u8>> for u8

fn from(x: Compact<u8>) -> u8

Converts to this type from the input type.

impl<T> From<T> for Compact<T>

fn from(x: T) -> Compact<T>

Converts to this type from the input type.

impl<T: Ord> Ord for Compact<T>

fn cmp(&self, other: &Compact<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq for Compact<T>

fn eq(&self, other: &Compact<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: PartialOrd> PartialOrd for Compact<T>

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T> Serialize for Compact<T>where T: Serialize,

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>where S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Copy> Copy for Compact<T>

impl<T> EncodeLike for Compact<T>where for<'a> CompactRef<'a, T>: Encode,

impl<T: Eq> Eq for Compact<T>

impl<T> StructuralEq for Compact<T>

impl<T> StructuralPartialEq for Compact<T>