úÎ ¢     NoneNone!"A reference indexed map.-useful for associating info with a reference.HideType, for hiding types! Shorthand Construct an empty map. &Construct a map with a single element. Returns  if the map is empty,  otherwise. 2Returns the number of elements stored in this map. Returns $ if the name is present in the map,  otherwise.-Finds the value associated with the name, or , if the name has no value associated to it.…Associates a reference with the specified value. If the map already contains a mapping for the reference, the old value is replaced.JRemoves the associated value of a reference, if any is present in the map.JUpdates the associated value of a reference, if any is present in the map. Union of two maps (left biased).Difference of two maps.Intersectino of two maps.           obser_HulBP5rtGwE1xVREz8cRLuData.Ref Data.Ref.MapReflabelderefref $fShowRef$fEqRefMapNameempty singletonnullsizememberlookupinsertdeleteadjustunion difference intersectionHideTypeghc-prim GHC.TypesTrueFalsebaseGHC.BaseNothingHide