Idris2/tests/idris2/coverage009/unreachable.idr

foo : Maybe Int -> Bool -> Int
foo Nothing _ = 42
foo Nothing True = 94
foo (Just x) _ = x
foo Nothing False = 42
Warn on detecting unreachable patterns I don't know how complete this is, but it certainly detects some of the most obvious cases which are most likely to be bugs. While I'm at it, this is as good a time as any to add a general way of reporting warnings, similar to the way of reporting errors. 2020-05-25 02:16:49 +03:00			`foo : Maybe Int -> Bool -> Int`
			`foo Nothing _ = 42`
			`foo Nothing True = 94`
			`foo (Just x) _ = x`
			`foo Nothing False = 42`