Struct bootstrap::cache::Cache

pub struct Cache(RefCell<HashMap<TypeId, Box<dyn Any>>>);

This is essentially a HashMap which allows storing any type in its input and any type in its output. It is a write-once cache; values are never evicted, which means that references to the value can safely be returned from the get() method.

Tuple Fields

0: RefCell<HashMap<TypeId, Box<dyn Any>>>

Implementations

impl Cache

pub fn new() -> Cache

pub fn put<S: Step>(&self, step: S, value: S::Output)

pub fn get<S: Step>(&self, step: &S) -> Option<S::Output>

Trait Implementations

impl Debug for Cache

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

Formats the value using the given formatter.

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: 56 bytes