mutable, const, immutable guidelines

[Christian Köstlin]

On 10/10/13 1:05 , qznc wrote:
Very interesting discussion!

 > contract between caller and callee. If an argument is const, it means
 > the callee says he can handle others changing the state concurrently.
i think what the usual understanding of const for an argument to callee 
is, what is written at http://dlang.org/const3.html. that means for me, 
that callee promises not to change the data itself. perhaps a bettr 
description would be readonly.

usually you would think that no one else should change the data while 
callee runs. but at least with c++ i could imagine running callee in a 
thread with a reference to a const thing which changes underneath and 
while callee is running.