[][src]Struct shred::Entry

pub struct Entry<'a, T: 'a> { /* fields omitted */ }

An entry to a resource of the World struct. This is similar to the Entry API found in the standard library.

Examples

use shred::World;

#[derive(Debug)]
struct Res(i32);

let mut world = World::empty();

let value = world.entry().or_insert(Res(4));
println!("{:?}", value.0 * 2);

Methods

impl<'a, T> Entry<'a, T> where
    T: Resource + 'a, 
[src]

pub fn or_insert(self, v: T) -> FetchMut<'a, T>[src]

Returns this entry's value, inserts and returns v otherwise.

Please note that you should use or_insert_with in case the creation of the value is expensive.

pub fn or_insert_with<F>(self, f: F) -> FetchMut<'a, T> where
    F: FnOnce() -> T, 
[src]

Returns this entry's value, inserts and returns the return value of f otherwise.

Auto Trait Implementations

impl<'a, T> Unpin for Entry<'a, T> where
    T: Unpin

impl<'a, T> Sync for Entry<'a, T> where
    T: Sync

impl<'a, T> Send for Entry<'a, T> where
    T: Send

impl<'a, T> !UnwindSafe for Entry<'a, T>

impl<'a, T> !RefUnwindSafe for Entry<'a, T>

Blanket Implementations

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

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

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.

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.

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

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

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

impl<T> Any for T where
    T: Any
[src]