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Re: Nasty language semantics (Was: error message I don understand) [message #174910 is a reply to message #174909] Sun, 17 July 2011 18:12 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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On 7/17/2011 1:47 PM, August Karlstrom wrote:
> 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.
>

Yup, four little used languages use it. Versus dozens of heavily used
languages.

>> 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
>

Yup, and you wonder why such languages are so seldom used - while others
such as C, C++, Java and PHP are used much more than any of the ones you
mentioned, at least in production?

As I said - you don't like the syntax, create your own language with
whatever syntax you want. No one is forcing you to use PHP or any other
language with syntax you don't like.

--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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