Crate pl_lens Copy item path Source compose_lens Provides a shorthand for composing a series of lenses. lens This is a macro-based shorthand that allows us to write: ComposedLens Composes two Lenses. LensPath Describes a lens relative to a source data structure. LensPathElement An element in a LensPath. Lens A lens offers a purely functional means to access and/or modify a field that is
nested in an immutable data structure. RefLens A lens that allows the target to be accessed and mutated by reference. ValueLens A lens that allows the target to be accessed only by cloning or copying the target value. compose Composes a Lens<A, B> with another Lens<B, C> to produce a new Lens<A, C>. modify Modifies the target of the lens by applying a function to the current value. This consumes the source.
(This lives outside the Lens trait to allow lenses to be object-safe but
still allow for static dispatch on the given closure.) Lenses Handles the #derive(Lenses) applied to a struct by generating a Lens implementation for
each field in the struct.