add lens-join/vector #129
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add lens-join/vector #129
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AlexKnauth
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| (define (inverse-function-lens f f-inv) | ||
| (make-lens | ||
| (λ (tgt) (f tgt)) | ||
| (λ (tgt v) (f-inv v)))) |
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Interesting side note: This is precisely what an isomorphic lens is (#79).
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closes #128