a small study of "deprecate"

[1100110]

On Wed, 07 Nov 2012 15:26:20 -0600, Jonathan M Davis <jmdavisProg at gmx.com>  
wrote:

> On Wednesday, November 07, 2012 14:16:26 monarch_dodra wrote:
>> I'm not going to propose a solution in this post, but I think
>> this is a good starting point for more discussion. Thoughts?
>
> There's a relatively easy solution to this - just add the concept of  
> soft and
> hard deprecation. Then, in additon to deprecate taking a message (which  
> it
> finally does now), it could take a value indicating the level of  
> deprecation.
> e.g.
>
> deprecated("use X instead", soft) void func();
>
> or
>
> deprecated("use X instead", hard) void func();
>
> or
>
> deprecated("use X instead", false) void func();
>
> or
>
> deprecated("use X instead", warning) void func();
>
> or whatever we decided to use for the argument to indicate the level of
> deprecation. But soft would mean that only a warning was given, whereas  
> hard
> would mean that you'd get an error. Then you make either soft or hard the
> default (hard would keep the current behavior) so that if it's not  
> provided,
> that's what's used. You then have normal -> soft -> hard -> gone.
>
> The problem is that when this was brought up before, Walter didn't want  
> to do
> anything ilke this, because he thought that it complicated the feature  
> too
> much. He liked deprecated being nice and simple. It probably doesn't  
> help that
> he doesn't like the idea of anything being deprecated in Phobos, and  
> Phobos
> was the main reason that such a feature change was being requested.
>
> So, I don't know what the odds of being able to get something like this  
> are.
> It's certainly what _I_ would like to see implemented though.
>
> - Jonathan M Davis

Walter seems to like simplicity to the point that you have to work around  
many of the 'simple' features.

It's not 'simple' if you need to hack around it to get the same effect  
that it should have had in the first place.
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