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

[dcharno <dcharno@...>]

On 01/27/2011 11:42 AM, Roberto Ierusalimschy wrote:
>    while cond do
>      do :process_item:
>
>                      break :process_item:
>
>      end
>    end

Do you really need the extra : after the label since both do and break 
are keywords?

> 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 the label is attached to the end keyword since (visually) it 
indicates where you are going.

    while cond do
      do

         break : process_item

      end : process_item
    end

That would allow you to label a break out of a while loop:

   while cond do

      break : while_end

   end : while_end

or a for loop:

   for i=1, 10 do

     break : for_end

   end : for_end