C# (CSharp) System.Collections.Generic HashSet.Concat Exemples

Exemple #1

        public static IEnumerable <IChangeSet <TItem> > CompareTo <TItem>(this HashSet <TItem> @this, HashSet <TItem> other)
        {
            if (@this == null)
            {
                throw new NullReferenceException();
            }
            if (other == null)
            {
                throw new ArgumentNullException(nameof(other));
            }

#if NET40
            Contract.EndContractBlock();
#endif

            var keys = @this.Concat(other).Distinct(@this.Comparer);
            foreach (var key in keys)
            {
                if (!other.Contains(key))
                {
                    yield return(new ChangeSet <TItem>(ChangeType.Added, key));

                    continue;
                }

                if ([email protected](key))
                {
                    yield return(new ChangeSet <TItem>(ChangeType.Removed, key));

                    continue;
                }

                yield return(new ChangeSet <TItem>(ChangeType.Equal, key));
            }
        }