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From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.ada
Subject: Re: "functional" programming in Ada
Date: Tue, 06 Mar 2018 20:46:04 -0800
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Date: 2018-03-06T20:46:04-08:00
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Manuel Collado <m-collado@users.sourceforge.net> writes:
> Well, it may sound a bit heterodox, but IMHO functional programming is
> just a subset of imperative (= procedural) programming.
>
> - Functional programming = expressions
> - Imperative programming = expressions + variables + procedural actions

By that logic, typed programming is just a subset of untyped
programming.

 - (sufficiently) typed programming = expressions with well-defined values
   
 - untyped programming: expressions with well-defined values +
   expressions with undefined values + arbitrary pointers and memory
   corruption
    
> So why avoid the power of some functional programming expressions in
> the imperative programming world?

Because eliminating dangerous features from a language can increase its
safety, predicability, etc.  Whether that applies to functional vs Ada
depends on a lot of things, but the generalization you seem to suppose
(that adding more power never does harm) makes no sense.