///resize from >> FieldMergeUtil >> xxComponentSerializer.Merge
public static T[] Resize <T>(T[] arr, int length) where T : class, IPatchClass <T>, new()
{
AssertUtility.Assert(arr == null || arr.Length == 0 || arr.Length == length, "resize a diff length static array");
if (arr == null || arr.Length != length)
{
arr = new T[length];
}
for (int i = 0; i < arr.Length; i++)
{
if (arr[i] == null)
{
arr[i] = PatchClassAllocator <T> .Create();
}
}
return(arr);
}
