Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Newsgroups: comp.lang.python
Subject: Re: Undefined behaviour in C [was Re: The Cost of Dynamism]
Date: Sun, 27 Mar 2016 09:47:08 -0400
Organization: IISS Elusive Unicorn
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On Sun, 27 Mar 2016 12:31:26 +0100, BartC <bc@freeuk.com> declaimed the
following:

>On 27/03/2016 07:34, Paul Rubin wrote:
>> BartC <bc@freeuk.com> writes:
>>>   But my suggestion was to have required a keyword in front of
>>> such expressions.
>>
>> Should there be a keyword in front of a line containing "sqrt(x)" ?
>> What about "launch(missiles)" ?
>
>They both look like function calls. Function calls are *very* commonly 
>used as standalone expressions.
>
>You /could/ stipulate that they be written:
>
>   call launch(missiles)    # like Fortran iirc
>
	Except that FORTRAN also explicitly defines them as

		subroutine xxx()
vs
		return-type function yyy()

and will generate a compile error if you "call" the latter, or put the
former in-line of an expression

	This would be the equivalent of removing "def" from Python, and adding
two new keywords: "sub" and "fun"; modifying the behavior so that "fun"s
must have an explicit return statement (preferably with an explicit return
value), whereas "sub"s have no return and just ... end...

-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/