lib/rbx/hash.fy in fancy-0.8.0 vs lib/rbx/hash.fy in fancy-0.9.0

@@ -5,10 +5,21 @@
   alias_method: 'at:put: for: "[]="
   alias_method: '[]: for: "[]="
   alias_method: 'at: for: '[]
   ruby_alias: '==
 
+  def initialize: default {
+    """
+    @default Default value for @self.
+
+    Initializes a new @Hash@ with @default as a default value.
+    If @default is a @Block@, call it with @self and a given key to get its default value.
+    """
+
+    default: default
+  }
+
   def each: block {
     each(&block)
   }
 
   def each_key: block {
@@ -48,7 +59,38 @@
 
     Indicates if a given key is in @self.
     """
 
     include?(key)
+  }
+
+  def default: default_value {
+    """
+    @default_value Default value for @self.
+
+    Sets the default value to be returned from @self for keys not in @self.
+    If @default_value is a @Block@, use its return value (called with the @Hash@ and a given key).
+    """
+
+    match default_value {
+      case Block -> @default_proc = true
+    }
+    @default = default_value
+  }
+
+  def default {
+    """
+    @return Default value for @self.
+    """
+
+    @default
+  }
+
+  def default_for: key {
+    """
+    @key Key to be used.
+    @return Default value for @key.
+    """
+
+    default(key)
   }
 }