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compose

lens

Function compose 

Source 
pub fn compose<LHS, RHS>(lhs: LHS, rhs: RHS) -> ComposedLens<LHS, RHS>
where
    LHS: RefLens,
    LHS::Target: 'static,
    RHS: Lens<Source = LHS::Target>,
Expand description

Composes a Lens<A, B> with another Lens<B, C> to produce a new Lens<A, C>.