Hi again,
I've updated the RFC to v1.1, because I've resolved the open issue of
whether to allow arbitrary expressions for keys. It seems that the risk
of confusion was less than I thought it was, and allowing anything not
only simplifies implementation, but means you can do things like have
object keys (when working with SplObjectStorage, for example).
You may wish to look over the RFC again: https://wiki.php.net/rfc/list_keys
Thanks.
--
Andrea Faulds
https://ajf.me/
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