/// <summary>
/// Sets the capacity of the collection preserving all of the
/// existing instances by copying them over to the new structure.
/// This is an expensive operation that should be avoided whenever
/// possible.
/// </summary>
protected void SetCapacity(Int64 capacity)
{
if (capacity == 0)
{
ReusableArray = null;
}
else
{
var newArray = _arrayFactory.CreateAtLeast <T>(capacity);
if (ReusableArray != null)
{
if (newArray.Size > _array.Size)
{
ReusableArray.GetArray().CopyTo(newArray.GetArray(), 0);
}
else
{
var newArrayData = newArray.GetArray();
var oldArray = _array.GetArray();
for (var index = 0; index < newArray.Size; index++)
{
newArrayData[index] = oldArray[index];
}
}
}
ReusableArray = newArray;
}
}