Re: Propsoal: a lua dialect without nil

[Eric Man <lericl.mailbox@...>]

True indeed. Maybe that's why I haven't encountered problems with it...

On 16/02/2011, at 9:23 PM, Roberto Ierusalimschy wrote:

> > Consider adding a new value next to "nil": "undefined".
> >
> > local t = {}
> > print ( t["somestring"])  --- prints "undefined"
> > t["somestring"] = nil
> > print ( t["somestring"])  --- prints "nil"
> >
> > Both undefined and nil evaluates to false when used in an if  
> > statement.
>
> You may just rename "undefined"->"nil" and "nil"->"false":
>
> t = {}
> print(t["somesting"])    --> prints "nil"
> t["somesting"] = false
> print(t["somesting"])    --> prints "false"
>
> Both nil and false evaluate to false when used in an if statement.
>
> -- Roberto