Type Alias Topic

pub type Topic = FilterSet<FixedBytes<32>>;

Available on crate feature rpc only.

A single topic

Aliased Type

struct Topic(/* private fields */);

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes

Implementations

impl<T> FilterSet<T>

where T: Clone + Eq + Hash,

pub fn to_value_or_array(&self) -> Option<ValueOrArray<T>>

Returns a ValueOrArray inside an Option, so that:

• If the filter is empty, it returns None
• If the filter has only 1 value, it returns the single value
• Otherwise it returns an array of values

impl<T> FilterSet<T>

where T: Eq + Hash,

pub fn is_empty(&self) -> bool

Returns whether the filter is empty

pub fn matches(&self, value: &T) -> bool

Returns whether the given value matches the filter. It the filter is empty any value matches. Otherwise, the filter must include the value

pub fn iter(&self) -> Iter<'_, T>

Returns an iterator over the underlying HashSet. Values are visited in an arbitrary order.

impl<T> FilterSet<T>

where T: AsRef<[u8]> + Eq + Hash,

pub fn to_bloom_filter(&self) -> BloomFilter

Returns a list of Bloom (BloomFilter) corresponding to the filter’s values

Trait Implementations

impl<T> Clone for FilterSet<T>

where T: Clone + Eq + Hash,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for FilterSet<T>

where T: Debug + Eq + Hash,

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

Formats the value using the given formatter.

impl<T> Default for FilterSet<T>

where T: Default + Eq + Hash,

fn default() -> FilterSet<T>

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for FilterSet<T>

where T: Eq + Hash + Deserialize<'de>,

fn deserialize<__D>( __deserializer: __D, ) -> Result<FilterSet<T>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> From<T> for FilterSet<T>

where T: Eq + Hash,

fn from(src: T) -> FilterSet<T>

Converts to this type from the input type.

impl From<Uint<256, 4>> for FilterSet<FixedBytes<32>>

fn from(src: Uint<256, 4>) -> FilterSet<FixedBytes<32>>

Converts to this type from the input type.

impl<T> From<ValueOrArray<Option<T>>> for FilterSet<T>

where T: Eq + Hash,

fn from(src: ValueOrArray<Option<T>>) -> FilterSet<T>

Converts to this type from the input type.

impl<T> From<ValueOrArray<T>> for FilterSet<T>

where T: Eq + Hash,

fn from(src: ValueOrArray<T>) -> FilterSet<T>

Converts to this type from the input type.

impl<T> From<Vec<T>> for FilterSet<T>

where T: Eq + Hash,

fn from(src: Vec<T>) -> FilterSet<T>

Converts to this type from the input type.

impl<T> FromIterator<T> for FilterSet<T>

where T: Eq + Hash,

fn from_iter<I>(iter: I) -> FilterSet<T>

where I: IntoIterator<Item = T>,

Creates a value from an iterator.

impl<T> Hash for FilterSet<T>

where T: Eq + Hash,

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> IntoIterator for FilterSet<T>

where T: Eq + Hash,

type Item = T

The type of the elements being iterated over.

type IntoIter = IntoIter<T>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <FilterSet<T> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<T> PartialEq for FilterSet<T>

where T: PartialEq + Eq + Hash,

fn eq(&self, other: &FilterSet<T>) -> 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<T> Eq for FilterSet<T>

where T: Eq + Hash,

impl<T> StructuralPartialEq for FilterSet<T>

where T: Eq + Hash,