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NNTP-Posting-Date: Tue, 11 Jul 2017 11:04:37 -0500
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Newsgroups: comp.lang.ada
Subject: Re: Generators/coroutines in future Ada?
Date: Tue, 11 Jul 2017 12:04:39 -0400
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Xref: news.eternal-september.org comp.lang.ada:47357
Date: 2017-07-11T12:04:39-04:00
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On Tue, 11 Jul 2017 15:26:49 +0200, "J-P. Rosen" <rosen@adalog.fr>
declaimed the following:

>Le 11/07/2017 à 15:01, Victor Porton a écrit :
>> I've realized how to imitate closures with generics.
>> 
>> But is there is a way to add generators to Ada?
>
>AFAIU, generators are functions with states, where the returned value at
>one call depends on the state that was left behind by the previous call.
>This can easily be achieved with a function within a package, where the
>package serves to protect and hide the function's state.
>

	Which description falls back to my first response in the thread --
using the standard random number generator as an example of a generic
package...

	As I interpret the random number generator, it hides the state in a
private type, instances of which need to be passed to the generator
function(s) should one need to have multiple generators of the same nature.
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/