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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Gnat GPL 2010 available soon (conditional expressions)
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Date: Sun, 27 Jun 2010 14:12:26 +0200
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Date: 2010-06-27T14:12:25+02:00
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On Sun, 27 Jun 2010 03:55:02 -0700 (PDT), lekktu@gmail.com wrote:

> On Jun 27, 10:37�am, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
> 
>> dropped "if", because you don't need it:
>>
>> � �(A then B [else C])
>>
>> is syntactically unambiguous and easier to read.
> 
> As you can see on the relevant AI, this was in fact considered (among
> lots of other things). FWIW, I'm quite glad they went for the 'if', to
> me it is *much* easier to read.

How do you know it? (:-))

BTW, in my language I also have a bracketless [infix] form:

    B when A else C

where "when" and "else" are true infix operators. The above is associated
as:

    ((B when A) else C)

The semantics is that

   B when A

is B when A is true and undefined when A is false.

   X else C

is X when X is defined and C otherwise. This is a bit easier to read,
because of its symmetry.

But so far I saw no readable syntax for conditional expressions and I doubt
that it existed.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de