lib/refinements/hash.rb in refinements-12.8.0 vs lib/refinements/hash.rb in refinements-12.9.0

@@ -78,12 +78,18 @@
 
       def symbolize_keys = transform_keys(&:to_sym)
 
       def symbolize_keys! = transform_keys!(&:to_sym)
 
-      def transform_with(operations) = dup.transform_with! operations
+      def transform_value(key, &) = dup.transform_value!(key, &)
 
-      def transform_with! operations
+      def transform_value! key
+        block_given? && key?(key) ? merge!(key => yield(self[key])) : self
+      end
+
+      def transform_with(**) = dup.transform_with!(**)
+
+      def transform_with!(**operations)
         operations.each { |key, function| self[key] = function.call self[key] if key? key }
         self
       end
 
       def use &block