diff options
| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-02-12 16:03:55 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-02-12 16:03:55 +0000 |
| commit | 1826065d7603d0993b78829856a5725f253c782d (patch) | |
| tree | 67f82826fee80d3124f8a2e670f3c75310d77ff6 /theories/Structures/OrdersAlt.v | |
| parent | 08528250663d850bc56c48dfaab9f5d71e1e7dee (diff) | |
CompSpecType, a clone of CompSpec but in Type instead of Prop
In interfaces fields like compare_spec, a CompSpec is prefered to get
nice extraction, but then no "destruct (compare_spec .. ..)" is
possible in a Type context. Now you can say there
"destruct (CompSpec2Type (compare_spec ... ...))"
This translate to the Type variant, and make the analysis on it
(which is equivalent to analysing the comparison directly).
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12753 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Structures/OrdersAlt.v')
| -rw-r--r-- | theories/Structures/OrdersAlt.v | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/theories/Structures/OrdersAlt.v b/theories/Structures/OrdersAlt.v index 261e75e1c..d86b02a15 100644 --- a/theories/Structures/OrdersAlt.v +++ b/theories/Structures/OrdersAlt.v @@ -101,9 +101,8 @@ Module Backport_OT (O:OrderedType) <: OrderedTypeOrig. Definition compare : forall x y, Compare lt eq x y. Proof. - intros. assert (H:=O.compare_spec x y). - destruct (O.compare x y); [apply EQ|apply LT|apply GT]; - inversion H; auto. + intros x y; destruct (CompSpec2Type (O.compare_spec x y)); + [apply EQ|apply LT|apply GT]; auto. Defined. End Backport_OT. |