Пример #1
0
            /// <summary>
            /// Removes the first occurrence of a specific object from the <see cref="T:System.Collections.Generic.ICollection`1"/>.
            /// </summary>
            /// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
            /// <returns>
            /// true if <paramref name="item"/> was successfully removed from the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false. This method also returns false if <paramref name="item"/> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1"/>.
            /// </returns>
            /// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.</exception>
            public bool Remove(T item)
            {
                var result = ImmutableHashSet <T> .Remove(item, this.Origin);

                this.Apply(result);
                return(result.Count != 0);
            }
        /// <summary>
        /// Performs an atomic pop from an Immutable Hash Set
        /// </summary>
        /// <param name="hashSet">The location of the hash set to remove from</param>
        /// <param name="item">The item to remove</param>
        /// <returns>True if an item was removed, or False if the item was not found</returns>
        public static bool Remove <T>(ref ImmutableHashSet <T> hashSet, T item)
        {               //****************************************
            ImmutableHashSet <T> OldSet, NewSet;

            //****************************************

            do
            {
                OldSet = hashSet;
                NewSet = OldSet.Remove(item);

                if (object.ReferenceEquals(OldSet, NewSet))
                {
                    return(false);
                }
            } while (Interlocked.CompareExchange(ref hashSet, NewSet, OldSet) != OldSet);

            return(true);
        }