Add the Boehm Berarducci encoding of Lists as a test #12841
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Add the Boehm Berarducci encoding of Lists in polymorphic lambda calculus as a test case
olhotak
reviewed
Jun 16, 2021
tests/run/boehm-berarducci.scala
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| def fst[T](v: ListView[T]): T = v(hd => tl => hd)(() => ???) | ||
| def snd[T](v: ListView[T]): List[T] = v(hd => tl => tl)(() => ???) | ||
| def isPair[T](v: ListView[T]): Boolean = v(hd => tl => false)(() => true) |
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I think this is reversed (true should be false, false should be true). Otherwise LGTM.
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Add the Boehm Berarducci encoding of Lists in polymorphic lambda calculus as a test case. It's useful to verify
we are dealing correctly with polymorphic function types and lambdas and to track possible future improvements
in type inference. The type annotations given in the test case all seem to be necessary.