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| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2007-10-29 23:52:01 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2007-10-29 23:52:01 +0000 |
| commit | 65ceda87c740b9f5a81ebf5a7873036c081b402c (patch) | |
| tree | c52308544582bc5c4dcec7bd4fc6e792bba91961 /theories/FSets/FSetEqProperties.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/FSetEqProperties.v')
| -rw-r--r-- | theories/FSets/FSetEqProperties.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/theories/FSets/FSetEqProperties.v b/theories/FSets/FSetEqProperties.v index 4a99a44a3..5ff52495a 100644 --- a/theories/FSets/FSetEqProperties.v +++ b/theories/FSets/FSetEqProperties.v @@ -290,7 +290,7 @@ Qed. Lemma singleton_mem_2: ~E.eq x y -> mem y (singleton x)=false. Proof. intros; rewrite singleton_b. -unfold ME.eqb; destruct (ME.eq_dec x y); intuition. +unfold eqb; destruct (eq_dec x y); intuition. Qed. Lemma singleton_mem_3: mem y (singleton x)=true -> E.eq x y. |