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From: Victor Porton <porton@narod.ru>
Newsgroups: comp.lang.ada
Subject: Re: Generators/coroutines in future Ada?
Date: Tue, 11 Jul 2017 15:52:37 +0300
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Date: 2017-07-11T15:52:37+03:00
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J-P. Rosen wrote:

> Le 10/07/2017 à 15:38, Victor Porton a écrit :
>> But AFAIK Ada does not support closures.
>> 
>> Are closures really needed to implement generators?
>> 
>> It is nearly impossible to add closures to Ada, right?
> 
> Taking the example from Wikipedia:
> 
> function startAt(x)
>    function incrementBy(y)
>        return x + y
>    return incrementBy
> 
> variable closure1 = startAt(1)
> variable closure2 = startAt(5)
> 
> This could be written as:
> generic
>    Start_Value : Integer
> function Increment_By (X : integer) return Integer;
> 
> function Closure1 is new Increment_By (1);
> function Closure2 is new Increment_By (5);

Please describe your solution with generics in more details, I do not quite 
understand it. I want to see how to imitate closures with generics.

-- 
Victor Porton - http://portonvictor.org