Enum HashOrHeight

pub enum HashOrHeight {
    Hash(Hash),
    Height(Height),
}

Identify a block by hash or height.

This enum implements From for block::Hash and block::Height, so it can be created using hash.into() or height.into().

Variants

Hash(Hash)

A block identified by hash.

Height(Height)

A block identified by height.

Implementations

impl HashOrHeight

pub fn height_or_else<F>(self, op: F) -> Option<Height>

where F: FnOnce(Hash) -> Option<Height>,

Unwrap the inner height or attempt to retrieve the height for a given hash if one exists.

pub fn hash_or_else<F>(self, op: F) -> Option<Hash>

where F: FnOnce(Height) -> Option<Hash>,

Unwrap the inner hash or attempt to retrieve the hash for a given height if one exists.

Consensus

In the non-finalized state, a height can have multiple valid hashes. We typically use the hash that is currently on the best chain.

pub fn hash(&self) -> Option<Hash>

Returns the hash if this is a HashOrHeight::Hash.

pub fn height(&self) -> Option<Height>

Returns the height if this is a HashOrHeight::Height.

Trait Implementations

impl Clone for HashOrHeight

fn clone(&self) -> HashOrHeight

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HashOrHeight

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

Formats the value using the given formatter.

impl Display for HashOrHeight

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

Formats the value using the given formatter.

impl From<(Hash, Height)> for HashOrHeight

fn from((hash, _height): (Hash, Height)) -> Self

Converts to this type from the input type.

impl From<(Height, Hash)> for HashOrHeight

fn from((_height, hash): (Height, Hash)) -> Self

Converts to this type from the input type.

impl From<Hash> for HashOrHeight

fn from(hash: Hash) -> Self

Converts to this type from the input type.

impl From<Height> for HashOrHeight

fn from(height: Height) -> Self

Converts to this type from the input type.

impl FromStr for HashOrHeight

type Err = SerializationError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl PartialEq for HashOrHeight

fn eq(&self, other: &HashOrHeight) -> 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 Copy for HashOrHeight

impl Eq for HashOrHeight

impl StructuralPartialEq for HashOrHeight