a small study of "deprecate"

[deadalnix]

Here is how I see it (and all language fail at that as far as my 
knowledge goes).

Deprecation comes with a date and a message.

Before the date, the dev is presented with the deprecation message when 
compiling. The message explain why the function is deprecated and what 
to use instead.

After the date, the message pops, but now it is an error (unless some 
flag is used).

At some point the function may be removed.