Re: I'd give my right arm for a continue statement

[Philippe Lhoste <PhiLho@...>]

On 27/01/2011 17:42, Roberto Ierusalimschy wrote:
> If that could save Steve's right arm, we like the idea of break with
> labels.

Interesting to have an official opinion...

> In Lua, we cannot have traditional labels, because the syntax "foo:"
> already has a different meaning. Instead, a simple syntax would be to
> add labels only to "do end" blocks, for instance like this:
>
>    do :label:
>      ...
>    end

Nice idea!

> Then, a continue could be written like here:
>
>    while cond do
>      do :process_item:
>
>                      break :process_item:
>
>      end
>    end

Well, will that execute the cond and exit if not satisfied?
Why not do:

  while cond do :process_item:

                   break :process_item:

  end

directly?

> There are several details that could change (other mark instead
> of colons, whether the label after break needs marks, whether an
> optional [or mandatory] label could be added after the corresponding
> 'end', etc.), but the basic idea would not change much.

Maybe [process_item]?

--
Philippe Lhoste
--  (near) Paris -- France
--  http://Phi.Lho.free.fr
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