Gadt meet subtyping definition

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gadt meet subtyping definition

1 Efficient in the same sense as ML: tends to run fast, but with some effort .. Some authors define lattices in terms of the binary join and meet operators. ⊔ and ⊓. It involves fine-grained properties of the subtyping relation that raise interesting design questions. We allow variance annotations in GADT definitions, study their . GADT meet subtyping mean for a GADT parameter to be covariant? The an- swer turns out Consider the following example of GADT definition: type α expr .

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gadt meet subtyping definition

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