/// <summary>
/// Adds all the elements in the specified collection to the set if they are not already present.
/// </summary>
/// <param name="c">A collection of objects to add to the set.</param>
/// <returns><c>true</c> is the set changed as a result of this operation, <c>false</c> if not.</returns>
public sealed override bool AddAll(ICollection c)
{
Set temp;
lock(c.SyncRoot)
{
temp = new HybridSet(c);
}
lock(_syncRoot)
{
return _basisSet.AddAll(temp);
}
}
/// <summary>
/// Returns <c>true</c> if the set contains all the elements in the specified collection.
/// </summary>
/// <param name="c">A collection of objects.</param>
/// <returns><c>true</c> if the set contains all the elements in the specified collection, <c>false</c> otherwise.</returns>
public sealed override bool ContainsAll(ICollection c)
{
Set temp;
lock (c.SyncRoot)
{
temp = new HybridSet(c);
}
lock (_syncRoot)
{
return(_basisSet.ContainsAll(temp));
}
}
/// <summary>
/// Retains only the elements in this set that are contained in the specified collection.
/// </summary>
/// <param name="c">Collection that defines the set of elements to be retained.</param>
/// <returns><c>true</c> if this set changed as a result of this operation.</returns>
public sealed override bool RetainAll(ICollection c)
{
//Put data from C into a set so we can use the Contains() method.
Set cSet = new HybridSet(c);
//We are going to build a set of elements to remove.
Set removeSet = new HybridSet();
foreach (object o in this)
{
//If C does not contain O, then we need to remove O from our
//set. We can't do this while iterating through our set, so
//we put it into RemoveSet for later.
if (!cSet.Contains(o))
{
removeSet.Add(o);
}
}
return(this.RemoveAll(removeSet));
}
/// <summary>
/// Retains only the elements in this set that are contained in the specified collection.
/// </summary>
/// <param name="c">Collection that defines the set of elements to be retained.</param>
/// <returns><c>true</c> if this set changed as a result of this operation.</returns>
public sealed override bool RetainAll(ICollection c)
{
//Put data from C into a set so we can use the Contains() method.
Set cSet = new HybridSet(c);
//We are going to build a set of elements to remove.
Set removeSet = new HybridSet();
foreach(object o in this)
{
//If C does not contain O, then we need to remove O from our
//set. We can't do this while iterating through our set, so
//we put it into RemoveSet for later.
if(!cSet.Contains(o))
removeSet.Add(o);
}
return this.RemoveAll(removeSet);
}