Re: Maybe of interest to people interested in programming languages?

"Friedrich Dominicus" <just-for-news-frido@[EMAIL PROTECTED]
> wrote
in 
message news:871w3oib2a.fsf@[EMAIL PROTECTED]
> "Bartc" <bc@[EMAIL PROTECTED]
> writes:
>
>> "Friedrich Dominicus" <just-for-news-frido@[EMAIL PROTECTED]
>
wrote 
>> in
>> message news:874p8lxe4f.fsf@[EMAIL PROTECTED]
>>> scholz.lothar@[EMAIL PROTECTED]
 writes:
>>>
>>>> On 23 Mai, 21:37, thomas.mer...@[EMAIL PROTECTED]
 wrote:
>>>>> Speaking about programming language development.
>>>>> Did you look at what other languages do?
>>
>>> But I Seed7
>>> does not have one loop construct with a sliding exit condition.
>>> We could have wrote
>>>
>>> loop until some_exit
>>>
>>> ....
>>> endloop
>>>
>>> loop
>>>        do this
>>>        do that
>>>        be happy
>>> until unhappy
>>>      do something else
>>>      yet somethin gelse
>>> endloop
>>>
>>> or
>>>
>>> loop
>>> xyz
>>> abc
>>> until exit_condition
>>> endloop
>>> so the until is "sliding ;-".
>>
>> That's a weird looking loop. Unless 'until exitcond' is just the same
as 
>> 'if
>> exitcond then break'?

> well what else should it be.

Well it did look odd because you see loop...until... which looks like a 
typical complete loop, especially if the endloop bit is off the screen.

Presumably there is only one 'until...'  in the loop? Then it's not quite 
like 'if ... then break' which allows multiple exits (ignoring the
problems 
of nested loops).

So a bit like Algol68's 'while a; b; c do c; d od' with most (or all) of
the 
loop body before the 'do'.

-- 
Bartc