> Containers still do silly things when you use `c[..]` syntax with no element there. (Both when trying to insert and when trying to retrieve!) This is surpri

> Containers still do silly things when you use `c[..]` syntax with no element there. (Both when trying to insert and when trying to retrieve!) This is surprising for Java devs, but given that value semantics must be supported, there's no way to avoid it.