Struct arc_swap::access::Map[−][src]

pub struct Map<A, T, F> { /* fields omitted */ }
Expand description

An adaptor to provide access to a part of larger structure.

This is the active part of this module. Use the module documentation for the details.

Implementations

impl<A, T, F> Map<A, T, F>[src]

pub fn new<R>(access: A, projection: F) -> Self where
    F: Fn(&T) -> &R + Clone, [src]

Creates a new instance.

Parameters

  • access: Access to the bigger structure. This is usually something like Arc<ArcSwap> or &ArcSwap. It is technically possible to use any other Access here, though, for example to sub-delegate into even smaller structure from a Map (or generic Access).
  • projection: A function (or closure) responsible to providing a reference into the bigger bigger structure, selecting just subset of it. In general, it is expected to be cheap (like only taking reference).

Trait Implementations

impl<A, F, T, R> Access<R> for Map<A, T, F> where
    A: Access<T>,
    F: Fn(&T) -> &R + Clone, [src]

type Guard = MapGuard<A::Guard, F, T, R>

A guard object containing the value and keeping it alive. Read more

fn load(&self) -> Self::Guard[src]

The loading method. Read more

impl<A: Clone, T: Clone, F: Clone> Clone for Map<A, T, F>[src]

fn clone(&self) -> Map<A, T, F>[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl<A: Debug, T: Debug, F: Debug> Debug for Map<A, T, F>[src]

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

Formats the value using the given formatter. Read more

impl<A: Copy, T: Copy, F: Copy> Copy for Map<A, T, F>[src]

Auto Trait Implementations

impl<A, T, F> RefUnwindSafe for Map<A, T, F> where
    A: RefUnwindSafe,
    F: RefUnwindSafe, 

impl<A, T, F> Send for Map<A, T, F> where
    A: Send,
    F: Send, 

impl<A, T, F> Sync for Map<A, T, F> where
    A: Sync,
    F: Sync, 

impl<A, T, F> Unpin for Map<A, T, F> where
    A: Unpin,
    F: Unpin, 

impl<A, T, F> UnwindSafe for Map<A, T, F> where
    A: UnwindSafe,
    F: UnwindSafe, 

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T, A> DynAccess<T> for A where
    A: Access<T>,
    <A as Access<T>>::Guard: 'static, [src]

pub fn load(&Self) -> DynGuard<T>[src]

The equivalent of Access::load.

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.