Changeset 2318 for cobra/trunk/Source/Cobra.Lang/ExtendDictionary.cobra

Timestamp:

03/14/10 08:28:09 (2 years ago)

Author:

Chuck.Esterbrook

Message:

Added IDictionary<of TKey, TValue>.get(key as TKey, default as TValue) as TValue

Files:

• cobra/trunk/Source/Cobra.Lang/ExtendDictionary.cobra (modified) (2 diffs)

cobra/trunk/Source/Cobra.Lang/ExtendDictionary.cobra

@@ -18 +18 @@
                 return newDict
 
+        def get(key as TKey, default as TValue) as TValue
+            """
+            Returns the value for the given key, or returns the default if the key is not found.
+            """
+            ensure not .containsKey(key) implies result == default
+            value as TValue
+            if .tryGetValue(key, out value), return value
+            else, return default
+
+
     class TestIDictionaryExtensions
 
@@ -32 +42 @@
             assert b.count == 2
             assert b['x'] == 1 and b['y'] == 2
+
+            d = {'a': 1, 'b': 2}
+            assert d.get('a', 0) == 1
+            assert d.get('c', 1) == 1