def lens

bendvy-ecs-core@0.1.0.4 · owner_product.bend:28

import Base

28def lens(~L:Type,~R:Type,~path:Path) -> Lens<Owner<L,R>,Part(~L,~R,path),Rest(~L,~R,path)>:
29  Lens{owner=>take(~L,~R,path,owner),rest=>part=>put(~L,~R,path,rest,part)}