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(&self, s: &Self::From) -> Option<Arc<Self::To>>

Get the focus of the lens, if available.

fn try_put<Convert>(
    &self,
    cv: Option<Convert>,
    s: &Self::From
) -> Option<Self::From> where
    Convert: Shared<Self::To>, 

Put a value into the lens, returning the updated From value if 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.