If the array fits in the cache, deleting from the middle of an array and copying all the subsequent elements one to the left is actually faster than a linked list.
I don't think the author was concerned with performance. I was providing the list.* type suggestion to make it easier to delete elements syntactically.
However, you're likely right for slices with len < 500 or so due to garbage collector churn on linked lists.
However, you're likely right for slices with len < 500 or so due to garbage collector churn on linked lists.