contains
Returns true if this queue contains the specified element. More formally, returns true if and only if this list contains at least one element e such that (o==null ? e==null : o.equals(e)).
Return
True if the queue contains the specified element.
Parameters
q Obj
The object to be removed
Returns true if this queue contains all the elements in the specified collection WARNING: The collection should contain references to QObject's otherwise it will certainly return false.
Return
True if the queue contains all the elements.
Parameters
c
Collection c of items to check