Support hashing domains

2019-11-07 03:14:21 -06:00
parent 7af51e9e64
commit 9202c839e2
1 changed files with 1 additions and 1 deletions
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -53,7 +53,7 @@ pub enum Formula
 	Predicate(Predicate),
 }
-#[derive(PartialEq)]
+#[derive(Eq, Hash, PartialEq)]
 pub enum Domain
 {
 	Program,