Struct ValueMut 

pub struct ValueMut<'a, V>
where
    V: ?Sized + HasDrop,
{ /* private fields */ }

A generic mutable value reference into a buffer.

Implementations

impl<'a, V: HasDrop> ValueMut<'a, V>

pub fn new<T: Any>(typed: &'a mut T) -> ValueMut<'a, V>

where V: VTable<T>,

Create a new ValueRef from a typed reference.

impl<'a, V: ?Sized + HasDrop> ValueMut<'a, V>

pub fn size(&self) -> usize

Get the size of the value pointed-to by this reference.

pub fn value_type_id(&self) -> TypeId

Get the TypeId of the referenced value.

pub fn value_alignment(&self) -> usize

Get the alignment of the referenced value.

pub fn is<T: 'static>(&self) -> bool

Returns true if this referenced value’s type is the same as T.

pub fn swap<'b>(&mut self, other: &mut ValueMut<'b, V>)

Swap the values between other and self.

pub fn assign<B: GetBytesMut + DropAsAligned>(&mut self, value: Value<B, V>)

Moves the given value into self.

pub fn clone_from_other<'b>( &mut self, other: impl Into<ValueRef<'b, V>>, ) -> Result<(), Error>

where V: HasClone + 'b,

Clone other into self.

This function will call drop on any values stored in self.

pub fn clone_value(&self) -> Value<Box<[MaybeUninit<u8>]>, V>

where V: HasClone + Clone,

Clone the referenced value.

Unlike the Clone trait, this function will produce an owned clone of the value pointed to by this value reference.

pub fn clone_small_value(&self) -> Value<MaybeUninit<usize>, V>

where V: HasClone + Clone,

Clone the referenced value.

Unlike the Clone trait, this function will produce an owned clone of the value pointed to by this value reference.

This version of clone_value tries to fit the underlying value into a usize sized value, and panics if that fails.

pub fn downcast<T: 'static>(self) -> Option<&'a mut T>

Downcast this value reference into a borrowed T type. Return None if the downcast fails.

pub fn upcast<U: ?Sized + HasDrop + From<V>>(self) -> ValueMut<'a, U>

where V: Clone,

A consuming upcast that carries the lifetime of the underlying value reference.

pub fn upcast_mut<U: ?Sized + HasDrop + From<V>>(&mut self) -> ValueMut<'_, U>

where V: Clone,

Create a new mutable value reference upcast from the current one.

pub fn reborrow(&self) -> ValueRef<'_, V>

pub fn reborrow_mut(&mut self) -> ValueMut<'_, V>

Trait Implementations

impl<'a, V: ?Sized + HasDebug + HasDrop> Debug for ValueMut<'a, V>

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

Formats the value using the given formatter.

impl<'a, V: Any + Clone> From<CopyValueMut<'a, V>> for ValueMut<'a, (DropFn, V)>

fn from(v: CopyValueMut<'a, V>) -> ValueMut<'a, (DropFn, V)>

Converts to this type from the input type.

impl<'a, V: HasDrop> From<ValueMut<'a, V>> for Meta<VTableRef<'a, V>>

fn from(val: ValueMut<'a, V>) -> Meta<VTableRef<'a, V>>

Converts to this type from the input type.

impl<'a, V: HasDrop> From<ValueMut<'a, V>> for ValueRef<'a, V>

fn from(v: ValueMut<'a, V>) -> ValueRef<'a, V>

Converts to this type from the input type.

impl<'a, V: ?Sized + HasHash + HasDrop> Hash for ValueMut<'a, V>

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<'a, V: ?Sized + HasPartialEq + HasDrop> PartialEq for ValueMut<'a, V>

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, V: ?Sized + HasEq + HasDrop> Eq for ValueMut<'a, V>

impl<'a, V: ?Sized + HasSend + HasDrop> Send for ValueMut<'a, V>

impl<'a, V: ?Sized + HasSync + HasDrop> Sync for ValueMut<'a, V>