Struct oasis_runtime_sdk :: state :: StateValue Copy item path

impl<'a, V: Any> StateValue<'a, V>

pub fn get(self) -> Option<&'a V>

Gets a reference to the specified per-state value.

§Panics

Panics if the retrieved type is not the type that was stored.

pub fn get_mut(&mut self) -> Option<&mut V>

Gets a mutable reference to the specified per-state value.

§Panics

Panics if the retrieved type is not the type that was stored.

pub fn set(self, value: V) -> &'a mut V

Sets the context value, returning a mutable reference to the set value.

§Panics

Panics if the retrieved type is not the type that was stored.

pub fn take(self) -> Option<V>

Takes the context value, if it exists.

§Panics

Panics if the retrieved type is not the type that was stored.

impl<'a, V: Any + Default> StateValue<'a, V>

pub fn or_default(self) -> &'a mut V

Retrieves the existing value or inserts and returns the default.

§Panics

Panics if the retrieved type is not the type that was stored.

Auto Trait Implementations§

impl<'a, V> !UnwindSafe for StateValue<'a, V>

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize = _

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Same for T

type Output = T

Should always be Self

impl<T, U> TryFrom for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto for T
where U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,