[Aldor-l] Generators

[Ralf Hemmecke]

Martin Rubey wrote:
> Ralf Hemmecke <ralf at hemmecke.de> writes:
> 
>> On 11/08/2007 07:01 PM, Laurentiu Dragan wrote:
>>> Ralf Hemmecke wrote:
>>>> PS: Now we need someone who incorporates this patch into the SVN 
>>>> repository. Laurentiu?
>>> I patched the sources and checked the two examples: aaa.as and bbb.as 
>>> and they work.
>> Thank you. Could you perhaps add these and the examples of Martin to the 
>> regression testsuite, if you include Peter' patch?
> 
> I think that our examples do not the right testing.

But at least they do some testing...

> For example, they do not
> test interaction with the suchthat clause, interaction with other iterators,
> what happens when we update one of the variables as in, for example

So we should even add more testcases.

> for (a,b) in l repeat if a=1 then b := 2;
> 
> etc.  Is the latter illegal, btw.?

Why should that be illegal?

Would you say that

For

#include "aldor"
import from Integer;
l: List Integer := [1,2];
for a in l repeat a := 42;

the compiler says

parrot:~/scratch>aldor aaa.as
"aaa.as", line 5: for a in l repeat a := 42;
                   ..................^
[L5 C19] #1 (Error) Cannot explicitly assign a `for' variable.

But where is this in the AUG?

Ralf