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-rw-r--r--src/Data/Array/Mixed/Lemmas.hs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/Data/Array/Mixed/Lemmas.hs b/src/Data/Array/Mixed/Lemmas.hs
index 633c9c2..ec7e7bd 100644
--- a/src/Data/Array/Mixed/Lemmas.hs
+++ b/src/Data/Array/Mixed/Lemmas.hs
@@ -108,6 +108,9 @@ lemTakeLenApp _ _ _ = unsafeCoerceRefl
lemInitApp :: Proxy l -> Proxy x -> Init (l ++ '[x]) :~: l
lemInitApp _ _ = unsafeCoerceRefl
+lemLastApp :: Proxy l -> Proxy x -> Last (l ++ '[x]) :~: x
+lemLastApp _ _ = unsafeCoerceRefl
+
-- ** KnownNat