now works if no interfaces have been added

soldni · Sep 5, 2022 · d716c0b · d716c0b
1 parent e8df545
commit d716c0b
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "trouting"
-version = "0.2.1"
+version = "0.2.2"
 description = "Trouting (short for Type Routing) is a simple class decorator that allows to define multiple interfaces for a method that behave differently depending on input types."
 authors = [
     {name = "Luca Soldaini", email = "[email protected]" }

diff --git a/src/trouting/core.py b/src/trouting/core.py
@@ -95,7 +95,7 @@ def add_interface(
         interface_specs = self._expand_interface_combinations(kwargs)
         current_interface_args = tuple(interface_specs[0].keys())
 
-        if not hasattr(self, "bounded_args"):
+        if self.bounded_args is None:
             self.bounded_args = current_interface_args
         elif self.bounded_args != current_interface_args:
             raise ValueError(