Struct DefaultHashBuilder 

pub struct DefaultHashBuilder { /* private fields */ }

Default hash builder for the S type parameter of HashMap and HashSet.

This only implements BuildHasher when the “default-hasher” crate feature is enabled; otherwise it just serves as a placeholder, and a custom S type must be used to have a fully functional HashMap or HashSet.

Trait Implementations

impl BuildHasher for DefaultHashBuilder

Available on crate feature default-hasher only.

type Hasher = DefaultHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> Self::Hasher

Creates a new hasher.

fn hash_one<T>(&self, x: T) -> u64

where T: Hash, Self: Sized, Self::Hasher: Hasher,

Calculates the hash of a single value.

impl Clone for DefaultHashBuilder

fn clone(&self) -> DefaultHashBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DefaultHashBuilder

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

Formats the value using the given formatter.

impl Default for DefaultHashBuilder

fn default() -> DefaultHashBuilder

Returns the “default value” for a type.