lib: remove some depreciated methods in Map

[nit.git] / src / metamodel / partial_order.nit

diff --git a/src/metamodel/partial_order.nit b/src/metamodel/partial_order.nit
index 91b8f43..ff71f47 100644 (file)
--- a/src/metamodel/partial_order.nit
+++ b/src/metamodel/partial_order.nit
@@ -40,7 +40,7 @@ class PartialOrder[E: Object]
 
        redef fun has(e) do return _elements.has_key(e)
 
-       redef fun has_only(e) do return _elements.length == 1 and _elements.first == e
+       redef fun has_only(e) do return _elements.length == 1 and _elements.values.first == e
 
        redef fun count(e)
        do