Struct SetterImpl 

pub struct SetterImpl<S, A, SETTER: Setter<S, A>>(pub SETTER, _);

A wrapper of the Setter optic implementations, encapsulating a setter function.

SetterImpl provides a way to define setters - optics that are able to write to a focued value of type A from a source of type S. This struct is particularly useful in scenarios where you need to allow a callee to write into a struct without being able to read its contents.

Note

This struct is not intended to be created by users directly, but it implements a From<Setter<S,A>> so that implementors of new optic types can wrap their concrete implementation of a Setter optic.

Type Parameters

• S: The source type from which the value is to be retrieved.
• A: The target type of the value to be retrieved.

See Also

• Setter trait for defining custom partial getters.
• [mapped_setter] function for creating SetterImpl instances from mapping functions.

Tuple Fields

0: SETTER

Trait Implementations

impl<S, A, SETTER: Setter<S, A>> From<SETTER> for SetterImpl<S, A, SETTER>

fn from(value: SETTER) -> Self

Converts to this type from the input type.

impl<S, A, SETTER: Setter<S, A>> HasSetter<S, A> for SetterImpl<S, A, SETTER>

fn set(&self, source: &mut S, value: A)

Sets a value of type A the optic focuses on in a mutable source of type S.