Re: [Proposal] Mass-to-string/mass-type/mass-functions

["Soni L." <fakedme@...>]

On 28/07/15 11:28 AM, Dirk Laurie wrote:
> 2015-07-28 15:26 GMT+02:00 Soni L. <fakedme@gmail.com>:
> > Currently these are the signatures for tostring and type:
> >
> > tostring (v) -> string
> >
> > type (v) -> string
> >
> > Would it hurt to change them to:
> >
> > tostring (v, ...) -> string, ...
> >
> > type (v, ...) -> string, ...
> >
> > (Similarly for math.tointeger/math.type/io.type, maybe also os.getenv, etc)
> Vararging a parameter list is a breaking change, even if it is fully
> backwards compatible with one-argument calls, because
>
>      tostring(myfun(foo))
>
> will currently keep only one of the return values of "myfun". You will
> need to insert parentheses in order to preserve that behaviour.
>
> In my reply to a previous post [1] of yours, I referred to a package
> that inter alia offers item-by-item evaluation of a one-argument function
> over a vararg.
>
> [1] http://lua-users.org/lists/lua-l/2015-04/msg00225.html
Assuming my proposal goes through, print(...) -> 
io.write(table.concat(table.pack(tostring(...)), "\t"))

It'd be nice if we could get rid of print().

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