예제 #1
0
        /// <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));
        }
예제 #2
0
		/// <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);
		}