Struct OptionalKeyPath 

pub struct OptionalKeyPath<Root, Value, F>
where
    F: for<'r> Fn(&'r Root) -> Option<&'r Value>,
{ /* private fields */ }

Implementations

impl<Root, Value, F> OptionalKeyPath<Root, Value, F>

where F: for<'r> Fn(&'r Root) -> Option<&'r Value>,

pub fn new(getter: F) -> Self

pub fn get<'r>(&self, root: &'r Root) -> Option<&'r Value>

pub fn then<SubValue, G>( self, next: OptionalKeyPath<Value, SubValue, G>, ) -> OptionalKeyPath<Root, SubValue, impl for<'r> Fn(&'r Root) -> Option<&'r SubValue>>

where G: for<'r> Fn(&'r Value) -> Option<&'r SubValue> + 'static, F: 'static, Value: 'static,

pub fn for_box<Target>( self, ) -> OptionalKeyPath<Root, Target, impl for<'r> Fn(&'r Root) -> Option<&'r Target> + 'static>

where Value: Deref<Target = Target> + 'static, F: 'static,

pub fn for_arc<Target>( self, ) -> OptionalKeyPath<Root, Target, impl for<'r> Fn(&'r Root) -> Option<&'r Target> + 'static>

where Value: Deref<Target = Target> + 'static, F: 'static,

pub fn for_rc<Target>( self, ) -> OptionalKeyPath<Root, Target, impl for<'r> Fn(&'r Root) -> Option<&'r Target> + 'static>

where Value: Deref<Target = Target> + 'static, F: 'static,

pub fn for_option<T>() -> OptionalKeyPath<Option<T>, T, impl for<'r> Fn(&'r Option<T>) -> Option<&'r T>>

impl<Root, Value, F> OptionalKeyPath<Root, Value, F>

where F: for<'r> Fn(&'r Root) -> Option<&'r Value> + 'static, Root: Any + 'static, Value: Any + 'static,

pub fn to_partial(self) -> PartialOptionalKeyPath<Root>

Convert to PartialOptionalKeyPath (hides Value type)

pub fn to_any(self) -> AnyKeyPath

Convert to AnyKeyPath (hides both Root and Value types)

pub fn to(self) -> PartialOptionalKeyPath<Root>

Convert to PartialOptionalKeyPath (alias for to_partial())

Trait Implementations

impl<Root: Clone, Value: Clone, F> Clone for OptionalKeyPath<Root, Value, F>

where F: for<'r> Fn(&'r Root) -> Option<&'r Value> + Clone,

fn clone(&self) -> OptionalKeyPath<Root, Value, F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.