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Nasty language semantics (Was: error message I don understand) [message #174909 is a reply to message #174908]

Sun, 17 July 2011 17:47

August Karlstrom
Messages: 16
Registered: October 2010

Karma:

Junior Member

On 2011-07-17 18:31, Peter H. Coffin wrote:
> On Sun, 17 Jul 2011 16:50:28 +0200, August Karlstrom wrote:
>
>> On 2011-07-17 15:03, Jerry Stuckle wrote:
>>
>>> This isn't mathematics - it is programming, as people have told you
>>> before. If you want mathematics, get a chalkboard.
>>
>> Don't be silly. There are several programming languages in which `='
>> denote (surprise) equality.
>
> Very few that use it alone.

Pascal, Modula-2, Eiffel and Ada all use `=' for equality and `:=' for
assignment.

> They may set the context with a previous
> "LET" or "test" or a grouping indicator, or, if they don't, they have
> very rigorous typing such that assignments are statements alone and do
> NOT return anything that could possibly be used in a logical/comparative
> way, not even a success or failure.

Yes, and for a good reason - the statement-expression separation (or
maybe we should say side-effect free expressions) is related to the
sound principle of command-query separation.

August

--
The competent programmer is fully aware of the limited size of his own
skull. He therefore approaches his task with full humility, and avoids
clever tricks like the plague. --Edsger Dijkstra

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[Message index]

		error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 14:38
		Re: error message I don understand By: Billy Mays on Fri, 15 July 2011 14:44
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 17:26
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 17:45
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 18:36
		Re: error message I don understand By: VanguardLH on Fri, 15 July 2011 19:25
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 20:36
		Re: error message I don understand By: liebling.kreuzberg@gm on Sat, 16 July 2011 09:17
		Re: error message I don understand By: The Natural Philosoph on Sat, 16 July 2011 12:52
		Re: error message I don understand By: Heinrich Ksner on Tue, 02 August 2011 14:02
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 20:35
		Re: error message I don understand By: Jerry Stuckle on Sat, 16 July 2011 13:30
		Re: error message I don understand By: liebling.kreuzberg@gm on Sat, 16 July 2011 19:14
		Re: error message I don understand By: The Natural Philosoph on Sat, 16 July 2011 21:18
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 16:49
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 17:25
		Re: error message I don understand By: Denis McMahon on Sat, 16 July 2011 19:28
		Re: error message I don understand By: liebling.kreuzberg@gm on Sun, 17 July 2011 08:21
		Re: error message I don understand By: Thomas 'PointedEars' on Sun, 17 July 2011 09:10
		Re: error message I don understand By: The Natural Philosoph on Sun, 17 July 2011 09:20
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:01
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:00
		Re: error message I don understand By: Denis McMahon on Sun, 17 July 2011 14:53
		Re: error message I don understand By: dougatmilmacdotcom on Sun, 17 July 2011 16:26
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 16:11
		Re: error message I don understand By: Denis McMahon on Sun, 17 July 2011 14:52
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 15:19
		Re: error message I don understand By: The Natural Philosoph on Mon, 18 July 2011 16:01
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 16:07
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 16:27
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 20:12
		Re: error message I don understand By: August Karlstrom on Sun, 17 July 2011 12:55
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:03
		Re: error message I don understand By: August Karlstrom on Sun, 17 July 2011 14:50
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 16:26
		Re: error message I don understand By: Peter H. Coffin on Sun, 17 July 2011 16:31
		Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 17:47
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Sun, 17 July 2011 18:12
		Re: Nasty language semantics (Was: error message I don understand) By: Robert Heller on Sun, 17 July 2011 18:26
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Sun, 17 July 2011 19:23
		Re: Nasty language semantics (Was: error message I don understand) By: The Natural Philosoph on Sun, 17 July 2011 19:50
		Re: Nasty language semantics (Was: error message I don understand) By: Robert Heller on Sun, 17 July 2011 20:17
		Re: Nasty language semantics (Was: error message I don understand) By: The Natural Philosoph on Sun, 17 July 2011 20:21
		Re: Nasty language semantics By: Thomas 'PointedEars' on Mon, 18 July 2011 16:17
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Sun, 17 July 2011 22:06
		Re: Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 22:48
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Sun, 17 July 2011 23:23
		Re: Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 23:51
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Mon, 18 July 2011 01:18
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Mon, 18 July 2011 08:22
		Re: Nasty language semantics (Was: error message I don understand) By: Peter H. Coffin on Mon, 18 July 2011 15:57
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 15:55
		Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Mon, 18 July 2011 18:31
		Re: Nasty language semantics By: Thomas 'PointedEars' on Mon, 18 July 2011 19:29

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