Re: [Proposal] break do end

[Coda Highland <chighland@...>]

On Wed, Aug 27, 2014 at 7:35 PM, Thiago L. <fakedme@gmail.com> wrote:
>
> On 27/08/14 11:34 PM, Coda Highland wrote:
>>
>> On Wed, Aug 27, 2014 at 7:17 PM, Thiago L. <fakedme@gmail.com> wrote:
>>>
>>> It would be cool if you could use break with do ... end for some sort of
>>> "safe goto"
>>>
>>> Example:
>>>
>>> do
>>> break
>>> local x = "you'll never see me"
>>> print(x)
>>> end
>>> print("something")
>>>
>>> Would print "something"
>>>
>>> In 5.2+ we have this:
>>>
>>> goto x
>>> local x = ""
>>> ::x::
>>> print("something")
>>>
>>> But it errors instead of doing the scoping stuff you can do with do ...
>>> end
>>>
>>> (This is probably not something for lua 5 but for lua 6 if/when we get
>>> it...
>>> it would probably be less harmful to change goto so that it does an
>>> implicit
>>> do ... end scoping thingy)
>>>
>> repeat
>>    -- statements here
>>    break
>>    -- rest of statements skipped
>> until false
>>
>> /s/ Adam
>>
> until true*, but that's uglier
>

No, until true would make it loop. until false makes the body of the
loop execute exactly once.

/s/ Adam