Struct im::map::MapLens

pub struct MapLens<K, V> { /* fields omitted */ }

Trait Implementations

impl<K, V> Clone for MapLens<K, V>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K, V> PartialLens for MapLens<K, V> where
    K: Ord, 

type From = Map<K, V>

type To = V

fn try_get<R>(&self, s: R) -> Option<Arc<V>> where
    R: AsRef<Map<K, V>>, 

Get the focus of the lens, if available.

fn try_put<Convert, R>(&self, cv: Option<Convert>, s: R) -> Option<Map<K, V>> where
    R: AsRef<Map<K, V>>,
    Arc<V>: From<Convert>, 

Put a value into the lens, returning the updated From value is the operation succeeded.

fn try_chain<L, Next>(
    &self,
    next: &L
) -> Compose<Self::From, Self::To, Next, Self, L> where
    L: PartialLens<From = Self::To, To = Next>, 

Compose this lens with a lens from To to a new type Next, yielding a lens from From to Next.