# MarkerUpdates class

用以描述Marker的更新项

## Constructors

MarkerUpdates.from (Set <Marker> previous, Set <Marker> current)
  根据之前的marker列表`previous`和当前的marker列表`current`创建`MakerUpdates`.

## Properties

hashCode → int
  The hash code for this object. [...]
  read-only, override
markerIdsToRemove ↔ Set <String>
  想要删除的marker的id集合
  read / write
markersToAdd ↔ Set <Marker>
  想要添加的marker集合.
  read / write
markersToChange ↔ Set <Marker>
  想要更新的marker集合.
  read / write
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited

## Methods

noSuchMethod (Invocation invocation) → dynamic
  Invoked when a non-existent method or property is accessed. [...]
  inherited
toMap () → Map <String, dynamic>
toString () → String
  Returns a string representation of this object.
  override

## Operators

operator == (Object other) → bool
  The equality operator. [...]
  override