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From: "Alejandro R. Mosteo" <alejandro@mosteo.com>
Newsgroups: comp.lang.ada
Subject: Re: "functional" programming in Ada
Date: Wed, 7 Mar 2018 16:16:23 +0100
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Xref: reader02.eternal-september.org comp.lang.ada:50879
Date: 2018-03-07T16:16:23+01:00
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On 07/03/18 16:03, Alejandro R. Mosteo wrote:
> On 07/03/18 11:07, Maciej Sobczak wrote:
>> On Tuesday, March 6, 2018 at 12:34:32 PM UTC+1, Alejandro R. Mosteo 
>> wrote:
>>
>>> I'm writing more code in declarative parts.
>>
>> It is interesting how language evolution leads to mixing of ideas or 
>> even dropping of original values.
>> If you write code in declarative parts (which also includes calling 
>> functions and using complex expressions to initialize variables at the 
>> point of declaration), then Ada might as well abandon the whole 
>> concept of dividing the code into declarative and imperative parts. If 
>> you can implement your whole system in the declarative part, then this 
>> division does not make sense any longer.
> 
> That's an interesting point. I'm not sure the declare - begin part is 
> that critical, since scopes are defined between begin - end anyway 
> (which is frustrating for exceptions sometimes, when you want to ensure 
> a subprogram won't raise from its declarative part).

I when to write some code and quickly realized why the declare-begin is 
so handy for proper scoping ;)