Re: __tostring and string.format

[Miles Bader <miles@...>]

Arseny Vakhrushev <arseny.vakhrushev@gmail.com> writes:
>>> Actually, it works well. I mean {...}/unpack() is fully reversible.
>> 
>> You're just lucky with your data
>> 
>> $ lua -e 'print(select("#", unpack{ 1, nil, 3 }))'
>> 3
>> 
>> $ luajit2 -e 'print(select("#", unpack{ 1, nil, 3 }))'
>> 1
>> 
>
> Well, I was talking about vanilla Lua. Anyway, the above difference is
> very weird because it doesn't allow to postpone the usage of varargs,
> for instance, in some coroutine create/resume loop where arguments could
> be anything generic. Fortunately, I rely on this behavior only within a
> testing framework which is run under plain Lua.

Sadly, the same is true of vanilla lua:

   $ lua -v
   Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio

   $ lua -e 'print(select ("#", unpack{ 1, nil, nil, nil, nil, nil,nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, 3 }))'
   1

-Miles

-- 
Guilt, n. The condition of one who is known to have committed an indiscretion,
as distinguished from the state of him who has covered his tracks.