lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

Another possibility would be to have a special unique non-nil
value (call it 'null') which is used to represent any embedded
nils in {...}.

You can use null=false or null={} if you must have null.

This is an oft-proposed "solution" which isn't. You can't remove a singularity by replacing it with another.

After all, once you have your special value null to stand in for nil, then you need reallynull to represent null, and reallyreallynull to represent reallynull, and so forth.