Struct RequestCacheKey 

pub struct RequestCacheKey { /* private fields */ }

Available on crate feature dx only.

The identity of one memoized computation within a request.

Built by #[request_cache]-generated code from the resolver’s declared name and the values of its declared key fields.

Field values are length-prefixed when rendered, so no value can forge a field boundary: a single field holding "1;b=1:2;" cannot collide with two fields holding "1" and "2". A collision here would hand back another computation’s result, which is the failure mode this type exists to prevent.

Implementations

impl RequestCacheKey

pub const fn new(resolver: &'static str) -> Self

Start a key for the named resolver.

pub fn field<T>(self, name: &str, value: &T) -> Self

where T: Display + ?Sized,

Add one key field’s name and value.

pub const fn resolver(&self) -> &'static str

The resolver this key belongs to.

Trait Implementations

impl Clone for RequestCacheKey

fn clone(&self) -> RequestCacheKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RequestCacheKey

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

Formats the value using the given formatter.

impl Display for RequestCacheKey

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

Formats the value using the given formatter.

impl Eq for RequestCacheKey

impl Hash for RequestCacheKey

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

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 Ord for RequestCacheKey

fn cmp(&self, other: &RequestCacheKey) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for RequestCacheKey

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for RequestCacheKey

fn partial_cmp(&self, other: &RequestCacheKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for RequestCacheKey