//--------------------------------------------------
/// <inheritdoc cref="Concat{T}(T,System.Collections.Generic.IEnumerable{T})" />
public static T Concat <T>([NotNull] T empty, [NotNull] params T[] items) where T : IAppendable <T>
{
if (items is null)
{
throw new ArgumentNullException(nameof(items));
}
return(Appendable.Concat(empty, items.AsEnumerable()));
}
//--------------------------------------------------
/// <summary>
/// Repeats <paramref name="item" /> <paramref name="times" />
/// times, and concatenates the result.
/// </summary>
public static T Repeat <T>(this T item, [NotNull] T empty, int times) where T : IAppendable <T>
{
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
if (empty == null)
{
throw new ArgumentNullException(nameof(empty));
}
if (times < 0)
{
throw new ArgumentOutOfRangeException(nameof(times));
}
return(Appendable.Concat(empty, Enumerable.Repeat(item, times)));
}