From ddfc0f782b801895fc370d0655dd655d98f997d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ivar=20H=C3=A4rnqvist?= <ivaha717@student.liu.se>
Date: Wed, 15 Apr 2020 23:45:29 +0200
Subject: [PATCH] add missing return type annotation

---
 b_asic/special_operations.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/b_asic/special_operations.py b/b_asic/special_operations.py
index ca7ff203..46796d18 100644
--- a/b_asic/special_operations.py
+++ b/b_asic/special_operations.py
@@ -75,7 +75,7 @@ class Register(AbstractOperation):
             return registers.get(self.key(index, prefix), self.param("initial_value"))
         return self.param("initial_value")
     
-    def evaluate_output(self, index: int, input_values: Sequence[Number], results: Optional[MutableResultMap] = None, registers: Optional[MutableRegisterMap] = None, prefix: str = ""):
+    def evaluate_output(self, index: int, input_values: Sequence[Number], results: Optional[MutableResultMap] = None, registers: Optional[MutableRegisterMap] = None, prefix: str = "") -> Number:
         if index != 0:
             raise IndexError(f"Output index out of range (expected 0-0, got {index})")
         if len(input_values) != 1:
-- 
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