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From: georg bauhaus <rmhost.bauhaus@maps.arcor.de>
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Subject: Re: Ada2012 : When to use expression functions rather than function
 bodies?
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Date: 17 Dec 2011 12:26:21 GMT
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Date: 2011-12-17T13:26:21+01:00
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Adam Beneschan <adam@irvine.com> wrote:
.
> 
> In most cases, it's probably OK to replace a function specification in
> the *private* part of a package with an expression function if the
> body is simple.  But the encapsulation argument could still apply if
> the function is intended to be usable by child packages.


A pragma Pure is, I think, helpful when
writing expression functions in particular
if it forces thinking about the kind of
functions one is writing: expression functions that
have effects other than computing 
the result value seem out of (some) style.