/// <summary>
/// Adds a sequence of items to the end of the collection.
/// </summary>
/// <param name="items">A sequence of items to add. Faster if the sequence is an array or a known collection type.</param>
/// <exception cref="ArgumentNullException">Thrown if the argument is null.</exception>
/// <exception cref="InvalidOperationException">Thrown if the collection exceeds its capacity.</exception>
/// <remarks>This member performs a lot better when the specified sequence is an array.</remarks>
public ImmVector <T> AddLastRange(IEnumerable <T> items)
{
items.CheckNotNull("items");
#if ASSERTS
var expected = Length;
var oldLast = TryLast;
#endif
var len = 0;
var s = 0;
if (IsEmpty)
{
var asVector = items as ImmVector <T>;
if (asVector != null)
{
return(asVector);
}
}
var arr = items.ToArrayFast(out len);
var oldLen = len;
if (Root.Length + len >= MaxCapacity)
{
throw Errors.Capacity_exceeded();
}
ImmVector <T> ret = Root.AddRange(arr, Lineage.Mutable(), 6, ref s, ref len);
#if ASSERTS
ret.Length.AssertEqual(expected + oldLen);
if (arr.Length > 0 && oldLen > 0)
{
ret.Last.AssertEqual(arr[oldLen - 1]);
}
else if (oldLast.IsSome)
{
ret.Last.AssertEqual(oldLast.Value);
}
#endif
return(ret);
}
public void AddRange(IEnumerable <T> items)
{
items.CheckNotNull("items");
if (_inner.Length == 0)
{
var vector = items as ImmVector <T>;
if (vector != null)
{
_inner = vector;
return;
}
}
int len;
var arr = items.ToArrayFast(out len);
var s = 0;
_inner = _inner.AddRange(arr, _lineage, 6, ref s, ref len);
}