Struct dync::ValueMut

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

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 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>(&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<[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<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: ?Sized + HasEq + HasDrop> Eq for ValueMut<'a, V>

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

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

Performs the conversion.

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

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

Performs the conversion.

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

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

Performs the conversion.

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

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.