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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Callback in Ada
Date: Sun, 02 Jan 2011 10:44:20 -0500
Organization: The World Public Access UNIX, Brookline, MA
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"Alex Mentis" <foo@invalid.invalid> writes:

> I was not able to get a short test program using the code above to
> compile using GNAT GPL 2010 from AdaCore, even when using the Ada 2012
> switches (-gnat12 and -gnat2012) and pragma (pragma Ada_2012).  The
> error I get makes it appear that the parser is looking for a �begin�
> for function Foobar.
>
> Using the following worked, though:
>
> function Foobar (A : Integer) return Integer is
> begin
>    return (if A > 10 then A - 5 else A);
> end Foobar;
>
> What am I missing?

I don't remember when these features were implemented.
Apparently, the GPL 2010 has 'if' expressions,
but expression functions are more recent.

- Bob