Re: Avoiding temporary tables
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- Subject: Re: Avoiding temporary tables
- From: Luis Carvalho <lexcarvalho@...>
- Date: Sat, 1 Jun 2013 09:01:54 -0400
> I have an application in which new tables tend to get created
> unnecessarily.
>
> E.g.
>
> myfunc(x)
>
> returns a table with the same keys as x. When called with
> an anonymous table, e.g.
>
> myfunc{1,2,3,4,5}
>
> it is OK to modify the table and return it, but when called with
> a table that already has a name, one must make a new copy
> in case that name is referenced later.
>
> Is there a way of diagnosing this difference?
A simple solution is to add a parameter that specifies if you want a copy or
not:
local _myfunc = myfunc
myfunc = function (x, copy)
return _myfunc(copy and copy(x) or x)
end
Cheers,
Luis
--
Computers are useless. They can only give you answers.
-- Pablo Picasso
--
Luis Carvalho (Kozure)
lua -e 'print((("lexcarvalho@NO.gmail.SPAM.com"):gsub("(%u+%.)","")))'