rename mapper-lens to map-lens
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@ -45,7 +45,7 @@ Lenses can also be joined together to form compound lenses that view many things
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Lenses can also be extended to operate on some new data structure:
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```racket
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> (define first-of-each-lens (mapper-lens first-lens))
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> (define first-of-each-lens (map-lens first-lens))
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> (lens-view first-of-each-lens '((1 2) (3 4) (5 6)))
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'(1 3 5)
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> (lens-set first-of-each-lens '((1 2) (3 4) (5 6)) '(a b c))
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@ -5,7 +5,7 @@ provide lazy-lens
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require fancy-app lens/private/base/main racket/promise
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module+ test
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require rackunit "if.rkt" "isomorphism/data.rkt" "mapper.rkt"
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require rackunit "if.rkt" "isomorphism/data.rkt" "map.rkt"
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(define-syntax-rule (lazy-lens expr)
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(let ([p (delay expr)])
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@ -16,13 +16,13 @@ module+ test
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name))
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module+ test
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(define (tree-mapper-lens item-lens)
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(define (tree-map-lens item-lens)
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(rec-lens the-tree-lens
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(lens-cond [list? (mapper-lens the-tree-lens)]
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(lens-cond [list? (map-lens the-tree-lens)]
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[else item-lens])))
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(check-equal? (lens-view (tree-mapper-lens symbol->string-lens) '(a (b (() c)) (d)))
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(check-equal? (lens-view (tree-map-lens symbol->string-lens) '(a (b (() c)) (d)))
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'("a" ("b" (() "c")) ("d")))
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(check-equal? (lens-set (tree-mapper-lens symbol->string-lens)
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(check-equal? (lens-set (tree-map-lens symbol->string-lens)
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'(a (b (() c)) (d))
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'("hay" ("bee" (() "sea")) ("deep")))
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'(hay (bee (() sea)) (deep)))
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@ -21,13 +21,13 @@ and set the target.
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Creates a potentially recursive lens, where @racket[lens-expr] can refer to
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@racket[rec-id] as a lazy version of itself.
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@lens-unstable-examples[
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(define (tree-mapper-lens item-lens)
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(define (tree-map-lens item-lens)
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(rec-lens the-tree-lens
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(lens-cond [list? (mapper-lens the-tree-lens)]
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(lens-cond [list? (map-lens the-tree-lens)]
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[else item-lens])))
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(lens-view (tree-mapper-lens symbol->string-lens) '(a (b (() c)) (d)))
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(lens-set (tree-mapper-lens symbol->string-lens)
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'(a (b (() c)) (d))
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'("hay" ("bee" (() "sea")) ("deep")))
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(lens-view (tree-map-lens symbol->string-lens) '(a (b (() c)) (d)))
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(lens-set (tree-map-lens symbol->string-lens)
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'(a (b (() c)) (d))
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'("hay" ("bee" (() "sea")) ("deep")))
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]}
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@ -6,7 +6,7 @@
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"isomorphism.rkt"
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"join-assoc.rkt"
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"lazy.rkt"
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"mapper.rkt"
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"map.rkt"
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"match.rkt"
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"set-filterer.rkt"
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"set-member.rkt"
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@ -19,7 +19,7 @@ this library being backwards-compatible.
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"isomorphism.scrbl"
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"join-assoc.scrbl"
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"lazy.scrbl"
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"mapper.scrbl"
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"map.scrbl"
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"match.scrbl"
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"set-filterer.scrbl"
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"set-member.scrbl"
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@ -2,9 +2,9 @@
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(require racket/contract/base)
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(provide (contract-out
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[mapper-lens
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[map-lens
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(-> lens? (lens/c list? list?))]
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[vector-mapper-lens
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[vector-map-lens
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(-> lens? (lens/c immutable-vector? immutable-vector?))]
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))
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@ -16,7 +16,7 @@
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(module+ test
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(require rackunit lens/private/list/main))
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(define (mapper-lens lens)
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(define (map-lens lens)
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(make-lens
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(lens-view/map lens _)
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(lens-set/map lens _ _)))
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@ -27,7 +27,7 @@
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(define (lens-set/map lens tgts new-views)
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(map (lens-set lens _ _) tgts new-views))
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(define (vector-mapper-lens lens)
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(define (vector-map-lens lens)
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(make-lens
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(lens-view/vector-map lens _)
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(lens-set/vector-map lens _ _)))
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@ -39,17 +39,17 @@
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(vector->immutable-vector (vector-map (lens-set lens _ _) tgt new-view)))
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(module+ test
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(check-equal? (lens-view (mapper-lens first-lens) '((a b) (c d) (e f)))
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(check-equal? (lens-view (map-lens first-lens) '((a b) (c d) (e f)))
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'(a c e))
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(check-equal? (lens-set (mapper-lens first-lens) '((a b) (c d) (e f)) '(1 2 3))
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(check-equal? (lens-set (map-lens first-lens) '((a b) (c d) (e f)) '(1 2 3))
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'((1 b) (2 d) (3 f)))
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(check-equal? (lens-transform (mapper-lens first-lens) '((a b) (c d) (e f)) (map symbol->string _))
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(check-equal? (lens-transform (map-lens first-lens) '((a b) (c d) (e f)) (map symbol->string _))
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'(("a" b) ("c" d) ("e" f)))
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(check-equal? (lens-view (vector-mapper-lens first-lens) '#((a b) (c d) (e f)))
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(check-equal? (lens-view (vector-map-lens first-lens) '#((a b) (c d) (e f)))
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'#(a c e))
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(check-equal? (lens-set (vector-mapper-lens first-lens) '#((a b) (c d) (e f)) '#(1 2 3))
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(check-equal? (lens-set (vector-map-lens first-lens) '#((a b) (c d) (e f)) '#(1 2 3))
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'#((1 b) (2 d) (3 f)))
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(check-equal? (lens-transform (vector-mapper-lens first-lens) '#((a b) (c d) (e f))
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(check-equal? (lens-transform (vector-map-lens first-lens) '#((a b) (c d) (e f))
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(immutable-vector-map symbol->string _))
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'#(("a" b) ("c" d) ("e" f)))
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)
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24
unstable/lens/map.scrbl
Normal file
24
unstable/lens/map.scrbl
Normal file
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@ -0,0 +1,24 @@
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#lang scribble/manual
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@(require lens/private/doc-util/main)
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@title{Lenses that map over lists and vectors}
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@defmodule[unstable/lens/map]
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@defproc[(map-lens [lens lens?]) lens?]{
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Creates a lens that maps @racket[lens] over a target list.
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@lens-unstable-examples[
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(lens-view (map-lens first-lens) '((a b) (c d) (e f)))
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(lens-set (map-lens first-lens) '((a b) (c d) (e f)) '(1 2 3))
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(lens-transform (map-lens first-lens) '((a b) (c d) (e f)) (λ (xs) (map symbol->string xs)))
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]}
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@defproc[(vector-map-lens [lens lens?]) lens?]{
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Creates a lens that maps @racket[lens] over a target vector with @racket[vector-map].
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@lens-unstable-examples[
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(lens-view (vector-map-lens first-lens) '#((a b) (c d) (e f)))
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(lens-set (vector-map-lens first-lens) '#((a b) (c d) (e f)) '#(1 2 3))
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(lens-transform (vector-map-lens first-lens) '#((a b) (c d) (e f))
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(λ (xs) (vector->immutable-vector (vector-map symbol->string xs))))
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]}
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@ -1,24 +0,0 @@
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#lang scribble/manual
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@(require lens/private/doc-util/main)
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@title{Lenses that map over lists and vectors}
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@defmodule[unstable/lens/mapper]
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@defproc[(mapper-lens [lens lens?]) lens?]{
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Creates a lens that maps @racket[lens] over a target list.
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@lens-unstable-examples[
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(lens-view (mapper-lens first-lens) '((a b) (c d) (e f)))
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(lens-set (mapper-lens first-lens) '((a b) (c d) (e f)) '(1 2 3))
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(lens-transform (mapper-lens first-lens) '((a b) (c d) (e f)) (λ (xs) (map symbol->string xs)))
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]}
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@defproc[(vector-mapper-lens [lens lens?]) lens?]{
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Creates a lens that maps @racket[lens] over a target vector with @racket[vector-map].
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@lens-unstable-examples[
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(lens-view (vector-mapper-lens first-lens) '#((a b) (c d) (e f)))
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(lens-set (vector-mapper-lens first-lens) '#((a b) (c d) (e f)) '#(1 2 3))
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(lens-transform (vector-mapper-lens first-lens) '#((a b) (c d) (e f))
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(λ (xs) (vector->immutable-vector (vector-map symbol->string xs))))
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]}
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@ -17,7 +17,7 @@ module+ test
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require lens/private/list/main
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rackunit
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"isomorphism/data.rkt"
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"mapper.rkt"
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"map.rkt"
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;; lens-zoom : (Lens (Outer Inner) Inner) (Lens A B) -> (Lens (Outer A) (Outer B))
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(define (lens-zoom zoom-lens transformer-lens)
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@ -77,7 +77,7 @@ module+ test
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(lens-set trans-second-first/third-second '(1 (2 3) (4 5)) '(a b c)))
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'(a b c))
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(define (rekey-alist-lens key->new-key-lens)
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(mapper-lens (lens-zoom car-lens key->new-key-lens)))
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(map-lens (lens-zoom car-lens key->new-key-lens)))
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(check-equal? (lens-view (rekey-alist-lens symbol->string-lens) '((a . 1) (b . 2) (c . 3)))
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'(("a" . 1) ("b" . 2) ("c" . 3)))
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(check-equal? (lens-set (rekey-alist-lens symbol->string-lens)
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@ -89,7 +89,7 @@ module+ test
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'(("one" . 10) ("two" . 200) ("three" . 3000)))
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'((one . 10) (two . 200) (three . 3000)))
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(define (rek+v-alist-lens key->new-key-lens value->new-value-lens)
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(mapper-lens (lens-zoom* car-lens key->new-key-lens cdr-lens value->new-value-lens)))
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(map-lens (lens-zoom* car-lens key->new-key-lens cdr-lens value->new-value-lens)))
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(check-equal? (lens-view (rek+v-alist-lens symbol->string-lens number->string-lens)
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'((a . 1) (b . 2) (c . 3)))
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'(("a" . "1") ("b" . "2") ("c" . "3")))
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