diff options
Diffstat (limited to 'theories')
| -rw-r--r-- | theories/Init/Datatypes.v | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/theories/Init/Datatypes.v b/theories/Init/Datatypes.v index 3525908ab..eb12be1a0 100644 --- a/theories/Init/Datatypes.v +++ b/theories/Init/Datatypes.v @@ -182,6 +182,11 @@ Definition CompOpp (r:comparison) := | Gt => Lt end. +(** Identity *) + +Definition ID := forall A:Type, A -> A. +Definition id : ID := fun A x => x. + (* begin hide *) (* Compatibility *) |