Fixed|libdeng2|Observers: Added missing const += by-ref operator

There was a corresponding const method for insertion by pointer, but no by reference.
skyjake · Aug 19, 2013 · 24d9997 · 24d9997
1 parent ba1a0e1
commit 24d9997
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/doomsday/client/src/world/world.cpp b/doomsday/client/src/world/world.cpp
@@ -859,7 +859,7 @@ Hand &World::hand(coord_t *distance) const
     if(d->hand.isNull())
     {
         d->hand.reset(new Hand());
-        const_cast<World *>(this)->audienceForFrameEnd += *d->hand;
+        audienceForFrameEnd += *d->hand;
         if(d->map)
         {
             d->updateHandOrigin();

diff --git a/doomsday/libdeng2/include/de/data/observers.h b/doomsday/libdeng2/include/de/data/observers.h
@@ -217,6 +217,11 @@ class Observers : public Lockable
         return *this;
     }
 
+    Observers<Type> const &operator += (Type &observer) const {
+        const_cast<Observers<Type> *>(this)->add(&observer);
+        return *this;
+    }
+
     void remove(Type *observer) {
         DENG2_GUARD(this);
         _members.remove(observer);