internal static int AddRangeIfNotNull <T>(this ICollection <T> ts, IEnumerable <T> collection, bool enforceUnique = false)
{
if (ts == null)
{
throw new ArgumentNullException(nameof(ts));
}
if (collection == null)
{
return(0);
}
if (collection.Count() < 1)
{
return(0);
}
int counter = 0;
foreach (T item in collection)
{
if (ts.AddIfNotNull(item, enforceUnique))
{
counter++;
}
}
return(counter);
}
/// <summary>
/// Add a range of items to the collection (but only if not null).
/// Also has an optional unique check.
/// </summary>
/// <typeparam name="T">Any Type</typeparam>
/// <param name="ts">The collection to add the item to.</param>
/// <param name="items">A range of items to add (if not null)</param>
/// <param name="enforceUnique">Should the collection's items be unique? (If <see langword="true"/> and the item already exists in the collection, it will not be added).</param>
/// <returns>The number of items added to the collection.</returns>
public static int AddRangeIfNotNull <T>(this ICollection <T> ts, IEnumerable <T> items, bool enforceUnique = false)
{
if (ts == null)
{
throw new ArgumentNullException(nameof(ts));
}
if (items.IsNullOrEmpty())
{
return(0);
}
int counter = 0;
foreach (T item in items)
{
if (ts.AddIfNotNull(item, enforceUnique))
{
counter++;
}
}
return(counter);
}
