Re: I miss table.foreach

[Tiago Salmito <tiago@...>]

On Wed, Sep 4, 2013 at 8:44 PM, slayer beast <slayerbeast@gmail.com> wrote:

if not table.foreach then

  table.foreach = function(t, f)

    for k, v in pairs(t) do f(k, v) end

  end

end

On Wed, Sep 4, 2013 at 7:36 PM, Tim Hill <drtimhill@gmail.com> wrote:

On Sep 4, 2013, at 3:25 PM, Ousmane Roland Yonaba <roland.yonaba@gmail.com> wrote:

> Since Lua 5.1, table.foreach and table.foreach were deprecated[1].
> It is known (I am such a fan of Game Of Thrones... :)).
>
> I would just like to know why. Are there good reasons to this ?
> I bet there are, as looking at the evolution of Lua, nothing is seems
> to be done without some solid motives at the basis.
>
> But to me, this syntax was so much beautiful:
>
>    table.foreach({...}, print)
>
> It misses me under Lua 5.2.x.
> Well, I am not saying I want it back. Just looking for...reasons.
> Thanks reading.
>
> Regards,
> Roland Y.
>
> [1] http://www.lua.org/manual/5.1/manual.html#7.2
>

It's pretty easy to add it back in with a few lines of Lua code…

-- NOT TESTED
function tableForEach(t, f)
        for _, v in pairs(t) do f(v) end
end

There are endless variations of course.

--Tim

If the function f returns a non-nil value the iteration loop terminates. [1]

 if not table.foreach then

  table.foreach = function(t, f)

    for k, v in pairs(t) do if f(k, v)~=nil then break end end

  end

end

[1] http://lua-users.org/wiki/TableLibraryTutorial