Re: List of Negative Language rules?

["Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr>]

Le Sun, 05 Aug 2012 16:39:42 +0200, Patrick  
<patrick@spellingbeewinnars.org> a écrit:

> This post is not a complaint and I hope it won't generate complaints  
> about the language, it is a request for help in organizing language  
> constructs.
>
> Ada is a feature rich language but as we know it is neither trivial to  
> learn or even more so,  trivial to write a compiler for.
>
> One thing I am having a hard time with are all the negative rules. I am  
> NOT complaining about any of these but some very simple examples:
>
> Pre-Ada 2012 functions cannot take in parameters

Or the other way: Post-Ada 2005 functions can get out parameters. That  
would be less an issue if they was a way to remind at call places, what  
the status of a parameter is. There use to be some proposals at  
comp.lang.ada, but none reached the formal proposal process. Prior to Ada  
2012, looking at a function invocation, you were rather sure parameters  
were not modified, except indirectly if you passed it a access to  
something, and this certainty existed only for functions, now it's gone  
and that's now less easy to trust what you see.

P.S. You've made a typo in your sentence. You probably wanted to say  
“Pre-Ada 2012 functions cannot take out parameters”

-- 
“Syntactic sugar causes cancer of the semi-colons.” [1]
“Structured Programming supports the law of the excluded muddle.” [1]
[1]: Epigrams on Programming — Alan J. — P. Yale University