> such a technique should only be necessary if the items don’t come with unique and stable ids on their own.
FWIW, these tips are also covered in his React course and he makes it clear in the course that this key generation technique should only be done when items don't have something better to use as the key. I think the blog post is just missing that context.
FWIW, these tips are also covered in his React course and he makes it clear in the course that this key generation technique should only be done when items don't have something better to use as the key. I think the blog post is just missing that context.