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Laws for text map type classes? #196

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rossabaker opened this issue May 3, 2023 · 1 comment
Open

Laws for text map type classes? #196

rossabaker opened this issue May 3, 2023 · 1 comment

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@rossabaker
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Getter:
keys-get consistency: forAll { (carrier) => keys(carrier).forall(key => get(carrier, key).isDefined)?

Updater:
idempotence?: forAll { (carrier, k, v) => updated(carrier, k, v) === updated(updated(carrier, k, v), k, v)
@AprilAtBanno
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at least currently, updater idempotence isn't true for Seq carriers

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@rossabaker @AprilAtBanno