diff options
| author | letouzey | 2007-10-29 23:52:01 +0000 |
|---|---|---|
| committer | letouzey | 2007-10-29 23:52:01 +0000 |
| commit | 65ceda87c740b9f5a81ebf5a7873036c081b402c (patch) | |
| tree | c52308544582bc5c4dcec7bd4fc6e792bba91961 /theories/FSets/FSetBridge.v | |
| parent | 172a2711fde878a907e66bead74b9102583dca82 (diff) | |
Revision of the FSetWeak Interface, so that it becomes a precise
subtype of the FSet Interface (and idem for FMapWeak / FMap).
1) No eq_dec is officially required in FSetWeakInterface.S.E
(EqualityType instead of DecidableType). But of course,
implementations still needs this eq_dec.
2) elements_3 differs in FSet and FSetWeak (sort vs. nodup). In
FSetWeak we rename it into elements_3w, whereas in FSet we
artificially add elements_3w along to the original elements_3.
Initial steps toward factorization of FSetFacts and FSetWeakFacts,
and so on...
Even if it's not required, FSetWeakList provides a eq_dec on sets,
allowing weak sets of weak sets.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10271 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/FSets/FSetBridge.v')
| -rw-r--r-- | theories/FSets/FSetBridge.v | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/theories/FSets/FSetBridge.v b/theories/FSets/FSetBridge.v index c5656402ff..993475757b 100644 --- a/theories/FSets/FSetBridge.v +++ b/theories/FSets/FSetBridge.v @@ -478,6 +478,10 @@ Module NodepOfDep (M: Sdep) <: S with Module E := M.E. Proof. intros; unfold elements in |- *; case (M.elements s); firstorder. Qed. + Hint Resolve elements_3. + + Lemma elements_3w : forall s : t, NoDupA E.eq (elements s). + Proof. auto. Qed. Definition min_elt (s : t) : option elt := match min_elt s with |