Re: Iterators in Ada2012

[Georg Bauhaus <rm.dash-bauhaus@futureapps.de>]

On 08.11.11 11:05, comp.lang.php wrote:
> I have an instantiation of the package Ada.Containers.Ordered_Maps
> (Integer, Float). Is there a neat way of iterating over the values
> similar to the construction:
> for x of a_Set loop ... end loop.

Fear of nesting a procedure? :-)

I had thought that the new syntax of AI 139 would be for all
containers.

Strangely, the fashion seems to be moving elsewhere:
list comprehensions, Map + Reduce (US Patent #7,650,331), Scala,
... all functional, hence little sympathy for for-loops.
Sequence comprehensions are now recommended when
writing Python, so I had thought there is all the more
to say in favor of a simple automatic

  Container.Iterate (Process => Meaningful_Name'Access).

But OTOH, Guido van Rossum suggested to simply write a
for-loop in place of a traditional reduce procedure.
With Ada, the two can be combined...