Struct string_interner::backend::SimpleBackend

pub struct SimpleBackend<S> { /* fields omitted */ }

A simple backend that stores a separate allocation for every interned string.

Use this if you can afford many small allocations and if you want to have especially decent performance for look-ups when the string interner is already filled to some extend.

Usage

• Fill: Efficiency of filling an empty string interner.
• Query: Efficiency of interned string look-up given a symbol.
• Memory: The number of allocations and overall memory consumption.

Rating varies between bad, ok and good.

Scenario	Rating
Fill	bad
Query	good
Memory	bad: many small allocations

Trait Implementations

impl<S> Backend<S> for SimpleBackend<S> where
    S: Symbol, 

fn with_capacity(cap: usize) -> Self

Creates a new backend for the given capacity.

unsafe fn intern(&mut self, string: &str) -> (InternedStr, S)

Interns the given string and returns its interned ref and symbol.

fn resolve(&self, symbol: S) -> Option<&str>

Resolves the given symbol to its original string contents.

unsafe fn intern_static(&mut self, string: &'static str) -> (InternedStr, S)

Interns the given static string and returns its interned ref and symbol.

impl<S> Clone for SimpleBackend<S> where
    S: Symbol, 

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S: Debug> Debug for SimpleBackend<S>

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

Formats the value using the given formatter.

impl<S> Default for SimpleBackend<S>

fn default() -> Self

Returns the "default value" for a type.

impl<S> Eq for SimpleBackend<S> where
    S: Symbol, 

impl<'a, S> IntoIterator for &'a SimpleBackend<S> where
    S: Symbol, 

type Item = (S, &'a str)

The type of the elements being iterated over.

type IntoIter = Iter<'a, S>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<S> PartialEq<SimpleBackend<S>> for SimpleBackend<S> where
    S: Symbol, 

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.