Skip to content
Snippets Groups Projects
Commit cfb3f5f5 authored by Robbert Krebbers's avatar Robbert Krebbers
Browse files

Setoid injectivity of Some.

parent 596a0a2c
No related branches found
No related tags found
No related merge requests found
Hide whitespace changes
Inline Side-by-side
Showing
with 2 additions and 0 deletions
theories/option.v
+ 2
− 0
View file @ cfb3f5f5
......@@ -118,6 +118,8 @@ Section setoids.
Proof. apply _. Qed.
Global Instance Some_proper : Proper ((≡) ==> (≡)) (@Some A).
Proof. by constructor. Qed.
Global Instance Some_equiv_inj : Inj (≡) (≡) (@Some A).
Proof. by inversion_clear 1. Qed.
Global Instance option_leibniz `{!LeibnizEquiv A} : LeibnizEquiv (option A).
Proof. intros x y; destruct 1; fold_leibniz; congruence. Qed.
......
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment