Re: eyes opened (tail recursion)

["chris.danx" <chris.danx@...>]

Roberto Ierusalimschy wrote:
> The book is almost ready (as always?). I estimate one more month to
> finish it all. What is missing?
>
> One problem with "selling" it now is that soon it will be out-dated by
> the final version. Maybe I could track buyers so they could have free
> updates?

How soon?  If it's only a month or two, I wouldn't sell it until it's 
done and have free updates anyway (for the errata and clarification of 
things - if you're gonna do this).  otoh you will get feedback on things 
that are wrong before the final release and it'll give you time to fix them.

> Another question: how much would be a fair price for an eletronic book?
> (and unfinished! But then you could be buying in advance the final
> version...)

I don't know but I hope there's a paper version.  £30 (about $40) is all 
I'd pay for a book now though, computing texts in general are too expensive!

> Another question: should I put the book free and ask for donations,
> instead of selling it?

I've noted that when authors do that, people won't donate.  otoh, people 
*will* be put off by an expensive text.

> (BTW: those willing to pay a little to help Lua please do not forget
> John's lottery.)

what's this?


Danx