Re: Reading from an empty file

[Shmuel Zeigerman <shmuz@...>]

On 05/09/2017 17:17, Roberto Ierusalimschy wrote:
> > I wonder why the first read from an empty file returns nil rather
> > than an empty string.
> > E.g. fp:read(10) --> nil
> >
> > If the zero-sized file exists then it can be interpreted as a file
> > containing an empty string (IMHO).
> Yes, that is a valid interpretation. With that interpretation, all
> reads after the last character would return an empty string, as there
> are infinite empty strings between the last character and the end of
> file.
With this logic we would have an infinite loop in the following case as 
well:
    for k in (""):gmatch(".*") do print("-",k) end
But we don't.

--
Shmuel