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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?= =?utf-8?Q?=29?=
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Newsgroups: comp.lang.ada
Subject: Re: Ada platforms and pricing, was: Re: a new language, designed for
 safety !
Date: Thu, 26 Jun 2014 05:24:47 +0200
Organization: Ada @ Home
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Xref: number.nntp.dca.giganews.com comp.lang.ada:187247
Date: 2014-06-26T05:24:47+02:00
List-Id: <comp.lang.ada>

Le Mon, 23 Jun 2014 22:14:13 +0200, Dmitry A. Kazakov  =

<mailbox@dmitry-kazakov.de> a =C3=A9crit:

> On Mon, 23 Jun 2014 12:21:11 -0700 (PDT), Dan'l Miller wrote:
>
>> On Monday, June 23, 2014 12:14:24 PM UTC-5, Dmitry A. Kazakov wrote:
>>> On Mon, 23 Jun 2014 12:17:38 +0100, Simon Wright wrote:
>>>> "Dmitry A. Kazakov" writes:
>>>>> Programming a state machine is turning all design upside down. If
>>>>> there were user-defined task support one could program this as if =
it
>>>>> were in proper tasks.
>>>
>>>> I find it easier to think about state machines as state machines  =

>>>> rather
>>>> than by encoding them using the program counter! I geuss it depends=
 on
>>>> your starting point.
>>
>> In the spirit of lambasting the lack of direct representation of
>> finite-state machines (FSMs) in Ada:
>
> Egh? Ada lacks nothing for programming FSM. It has:
>
> 1. gotos and labels
> 2. access to subprogram type
> 3. dispatching

Yes, labels, except the syntax of labels in (on purpose?) so ugly it  =

prevent it's frequent use.

=E2=80=9CState_Foo:=E2=80=9D is more intuitive less ugly than =E2=80=9C<=
<State_Foo>>=E2=80=9D. The =E2=80=9Cgoto=E2=80=9D  =

statement is luckily fine. When I say it's ugly, that's because there is=
  =

too much garbage around the label and the label name does not come first=
  =

(there is the =E2=80=9C<<=E2=80=9D before it).

This syntax would be OK for an emphasis, but within a state machine, one=
  =

often have many labels and it's not a good idea to make them all looks  =

like emphases.

-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity