Struct NumShards 

pub struct NumShards { /* private fields */ }

Number of shards in the network

Implementations

impl NumShards

pub const fn new( intermediate_shards: NonZeroU16, leaf_shards_per_intermediate_shard: NonZeroU16, ) -> Option<Self>

Create a new instance from a number of intermediate shards and leaf shards per intermediate shard.

Returns None if inputs are invalid.

This is typically only necessary for low-level code.

pub const fn intermediate_shards(self) -> NonZeroU16

The number of intermediate shards

pub const fn leaf_shards_per_intermediate_shard(self) -> NonZeroU16

The number of leaf shards per intermediate shard

pub const fn leaf_shards(&self) -> NonZeroU32

Total number of leaf shards in the network

pub fn iter_intermediate_shards(&self) -> impl Iterator<Item = ShardIndex>

Iterator over all intermediate shards

pub fn iter_leaf_shards(&self) -> impl Iterator<Item = ShardIndex>

Iterator over all intermediate shards

pub fn derive_shard_index( &self, public_key_hash: &Blake3Hash, shard_commitments_root: &ShardCommitmentHash, shard_membership_entropy: &ShardMembershipEntropy, history_size: HistorySize, ) -> ShardIndex

Derive shard index that should be used in a solution

pub fn derive_shard_commitment_index( &self, public_key_hash: &Blake3Hash, shard_commitments_root: &ShardCommitmentHash, shard_membership_entropy: &ShardMembershipEntropy, history_size: HistorySize, ) -> u32

Derive shard commitment index that should be used in a solution.

Returned index is always within 0..SolutionShardCommitment::NUM_LEAVES range.

pub fn derive_shard_index_and_shard_commitment_index( &self, public_key_hash: &Blake3Hash, shard_commitments_root: &ShardCommitmentHash, shard_membership_entropy: &ShardMembershipEntropy, history_size: HistorySize, ) -> (ShardIndex, u32)

More efficient version of Self::derive_shard_index() and Self::derive_shard_commitment_index() in a single call, see those functions for details

Trait Implementations

impl Clone for NumShards

fn clone(&self) -> NumShards

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NumShards

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

Formats the value using the given formatter.

impl Decode for NumShards

Available on crate feature scale-codec only.

fn decode<I: Input>(input: &mut I) -> 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<'de> Deserialize<'de> for NumShards

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for NumShards

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<R, F>(&self, f: F) -> R

where 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 From<NumShards> for NumShardsUnchecked

fn from(value: NumShards) -> Self

Converts to this type from the input type.

impl MaxEncodedLen for NumShards

fn max_encoded_len() -> usize

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

impl PartialEq for NumShards

fn eq(&self, other: &NumShards) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for NumShards

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<NumShardsUnchecked> for NumShards

type Error = ()

The type returned in the event of a conversion error.

fn try_from(value: NumShardsUnchecked) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for NumShards

impl EncodeLike for NumShards

impl Eq for NumShards

impl StructuralPartialEq for NumShards