2011/6/14 Lorenzo Donati
<lorenzodonatibz@interfree.it>
On 14/06/2011 0.32, Roberto Ierusalimschy wrote:
If the start character must be something unused in Lua, there are
few alternatives among ASCII: #, $, |,&, ?, !, `.
Actually it can be a new token, as Tony suggested. For instance, Ada
uses the syntax<<label>>.
Probably the best bets are # and $, since the other may better serve
as operators in Lua 9.5 :-P :-)
Should<< and>> be reserved for 9.5? :)
-- Roberto
goto continue
...
<<continue>>
Well, much better than @continue: (the more I see that colon, the more I hate it. I really feel it doesn't belong there).
If colons have to be used, I think
::continue::
is much better and doesn't clash with future uses as operator (well, not counting the C++ static scope operator, or however it is called).
It is symmetric and bulky. It doesn't misleadingly point backwards or forwards. Clearly marks a point in the code and, well, it brings to mind a real label or price tag!
Or, makes goto jumps into a local variable's scope:
for i = 1, 10 do
if i % 2 == 0 then goto continue end
print(i)
local continue
end
is that OK?
