/// <summary>
/// Creates an array from the contents of this builder.
/// </summary>
/// <remarks>
/// Regions created with <see cref="Reserve"/> will be default-initialized.
/// </remarks>
public T[] ToArray()
{
// If no regions were reserved, there are no 'gaps' we need to add to the array.
// In that case, we can just call ToArray on the underlying builder.
if (_markers.Count == 0)
{
Debug.Assert(_reservedCount == 0);
return(_builder.ToArray());
}
var array = new T[Count];
CopyTo(array, 0, array.Length);
return(array);
}
/// <summary>Converts an enumerable to an array.</summary>
/// <param name="source">The enumerable to convert.</param>
/// <returns>The resulting array.</returns>
internal static T[] ToArray <T>(IEnumerable <T> source)
{
Debug.Assert(source != null);
if (source is ICollection <T> collection)
{
int count = collection.Count;
if (count == 0)
{
return(Array.Empty <T>());
}
var result = new T[count];
collection.CopyTo(result, arrayIndex: 0);
return(result);
}
var builder = new LargeArrayBuilder <T>(initialize: true);
builder.AddRange(source);
return(builder.ToArray());
}
