Struct PartialWritableOptionalKeyPath 

pub struct PartialWritableOptionalKeyPath<Root> { /* private fields */ }

PartialWritableOptionalKeyPath - Hides the Value type but keeps Root visible (writable optional)

Why PhantomData?

See PartialKeyPath documentation for explanation of why PhantomData is needed.

Implementations

impl<Root> PartialWritableOptionalKeyPath<Root>

pub fn new<Value>( keypath: WritableOptionalKeyPath<Root, Value, impl for<'r> Fn(&'r mut Root) -> Option<&'r mut Value> + 'static>, ) -> Self

where Value: Any + 'static, Root: 'static,

pub fn get_mut<'r>(&self, root: &'r mut Root) -> Option<&'r mut dyn Any>

pub fn value_type_id(&self) -> TypeId

Get the TypeId of the Value type

pub fn get_mut_as<'a, Value: Any>( &self, root: &'a mut Root, ) -> Option<Option<&'a mut Value>>

Try to downcast the result to a specific type

Trait Implementations

impl<Root: Clone> Clone for PartialWritableOptionalKeyPath<Root>

fn clone(&self) -> PartialWritableOptionalKeyPath<Root>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.