General preference is to always provide unique key...

# compose

[ritesh]

General preference is to always provide unique keys to the Lazy ? - What if i don't have a unique key for my model and i know that List<> data set positions won't be re-arranged but only new data-set will be appended, i can live without giving unique keys (without going into the path of generating some unique keys - like UUID for each item) to it, positional memoization should be fine for this use-case or there's a trade-off?