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Commit 53a108a6 authored by Ralf Jung's avatar Ralf Jung Committed by Robbert Krebbers
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theories/option.v
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......@@ -40,6 +40,7 @@ Proof. congruence. Qed.
Definition is_Some {A} (mx : option A) := ∃ x, mx = Some x.
Global Instance: Params (@is_Some) 1 := {}.
(** We avoid calling [done] recursively as that can lead to an unresolved evar. *)
Global Hint Extern 0 (is_Some _) => eexists; fast_done : core.
Lemma is_Some_alt {A} (mx : option A) :
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