Struct frame_election_provider_support::IndexAssignment

pub struct IndexAssignment<VoterIndex, TargetIndex, P: PerThing> {
    pub who: VoterIndex,
    pub distribution: Vec<(TargetIndex, P)>,
}

The IndexAssignment type is an intermediate between the assignments list (&[Assignment<T>]) and SolutionOf<T>.

The voter and target identifiers have already been replaced with appropriate indices, making it fast to repeatedly encode into a SolutionOf<T>. This property turns out to be important when trimming for solution length.

Fields

who: VoterIndex

Index of the voter among the voters list.

distribution: Vec<(TargetIndex, P)>

The distribution of the voter’s stake among winning targets.

Targets are identified by their index in the canonical list.

Implementations

impl<VoterIndex, TargetIndex, P: PerThing> IndexAssignment<VoterIndex, TargetIndex, P>

pub fn new<AccountId: IdentifierT>(
    assignment: &Assignment<AccountId, P>,
    voter_index: impl Fn(&AccountId) -> Option<VoterIndex>,
    target_index: impl Fn(&AccountId) -> Option<TargetIndex>
) -> Result<Self, Error>

Trait Implementations

impl<VoterIndex: Clone, TargetIndex: Clone, P: Clone + PerThing> Clone for IndexAssignment<VoterIndex, TargetIndex, P>

fn clone(&self) -> IndexAssignment<VoterIndex, TargetIndex, P>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<VoterIndex, TargetIndex, P> Debug for IndexAssignment<VoterIndex, TargetIndex, P>where
    VoterIndex: Debug,
    TargetIndex: Debug,
    P: Debug + PerThing,

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

Formats the value using the given formatter.

impl<VoterIndex, TargetIndex, P: PerThing> Decode for IndexAssignment<VoterIndex, TargetIndex, P>where
    VoterIndex: Decode,
    Vec<(TargetIndex, P)>: Decode,

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<VoterIndex: Default, TargetIndex: Default, P: Default + PerThing> Default for IndexAssignment<VoterIndex, TargetIndex, P>

fn default() -> IndexAssignment<VoterIndex, TargetIndex, P>

Returns the “default value” for a type.

impl<VoterIndex, TargetIndex, P: PerThing> Encode for IndexAssignment<VoterIndex, TargetIndex, P>where
    VoterIndex: Encode,
    Vec<(TargetIndex, P)>: Encode,

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, Global>

Convert self to an owned vector.

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.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<VoterIndex: PartialEq, TargetIndex: PartialEq, P: PartialEq + PerThing> PartialEq<IndexAssignment<VoterIndex, TargetIndex, P>> for IndexAssignment<VoterIndex, TargetIndex, P>

fn eq(&self, other: &IndexAssignment<VoterIndex, TargetIndex, P>) -> 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<VoterIndex, TargetIndex, P: PerThing> EncodeLike<IndexAssignment<VoterIndex, TargetIndex, P>> for IndexAssignment<VoterIndex, TargetIndex, P>where
    VoterIndex: Encode,
    Vec<(TargetIndex, P)>: Encode,

impl<VoterIndex: Eq, TargetIndex: Eq, P: Eq + PerThing> Eq for IndexAssignment<VoterIndex, TargetIndex, P>

impl<VoterIndex, TargetIndex, P: PerThing> StructuralEq for IndexAssignment<VoterIndex, TargetIndex, P>

impl<VoterIndex, TargetIndex, P: PerThing> StructuralPartialEq for IndexAssignment<VoterIndex, TargetIndex, P>