Re: [Lua snippit] print_hex

[Kris Katterjohn <katterjohn () gmail com>]

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Patrick Donnelly wrote:
> That looks fine. I put the "out" local out of the function definition
> to prevent the string from repeatedly being remade (numbers are
> constant folded but not strings). I did this mainly to expose people
> on the list to some good practices (among other things I did), even
> though it probably won't make a huge difference in a debugging
> function. If you moved it inside because you didn't want to clutter
> the surrounding function (the file) with variables, you can surround
> the print_hex function with do ... end to force scoping.

I'm pretty sure Brandon, I and others have brought this up in the past, but it
would be awesome to have a "Best Practices" section (short is fine) in the
Nmap docs/book somewhere on Lua coding, and any gotchas that could get us who
come from many other languages (I think most people here learned Lua solely
for NSE... I know I did).  I know Brandon recently posted a link on learning
Lua from a Perl background, but I've never been much of a Perl guy.

And also anything we can do to make things more efficient.  I don't know how
the Lua interpreter works wrt optimizations or whathaveyou, which is perhaps
another good reason for having some docs on this.

So nothing too broad, just things that can help out specifically on the NSE front.

You obviously seem like a good candidate for writing this, but this is of
course an invitation to anyone who knows Lua well :)

> Cheers,

Thanks,
Kris Katterjohn

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