Hacker News Reader

>With maps this whole class of problems goes away.

A friendly warning from long time dictionary (ab)user. They introduce their own class of problems. Basically the strong vs weak type ones.

View on HN

Agreed. Erlang's maps have two different operators when setting values on them, one if you care that the key already existed and one if you don't, so in that way you can still somewhat enforce strictness of keys. But you can relax that strictness when it comes time to roll out changes.

Reply on news.ycombinator.com