[−][src]Struct extensions::Extensions
A type map of extensions.
Methods
impl Extensions
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pub fn new() -> Extensions
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Create an empty Extensions
.
pub fn insert<T: 'static>(&mut self, val: T) -> Option<T>
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Insert a value into this Extensions
.
If a extension of this type already exists, it will be returned.
pub fn contains<T: 'static>(&self) -> bool
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Check if container contains typed value
pub fn get<T: 'static>(&self) -> Option<&T>
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Get a reference to a typed value previously inserted on this Extensions
.
pub fn get_mut<T: 'static>(&mut self) -> Option<&mut T>
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Get a mutable reference to a typed value previously inserted on this Extensions
.
pub fn remove<T: 'static>(&mut self) -> Option<T>
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Remove a typed value from this Extensions
.
If a value of this type exists, it will be returned.
pub fn clear(&mut self)
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Clear the Extensions
of all inserted values.
Trait Implementations
Auto Trait Implementations
impl !Send for Extensions
impl !Sync for Extensions
impl Unpin for Extensions
impl !UnwindSafe for Extensions
impl !RefUnwindSafe for Extensions
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = !
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,