Would you like to try const-by-default or not?

[torhu]

Rioshin an'Harthen wrote:
> 
> I'd definitely go for option 2 - having had to code const correct C++, I 
> know
> what kind of a pain it is. Much simpler to have every parameter be const by
> default and add mutable/variant etc. in front of those the compiler 
> complains
> about. Voila! Automatically const correct code. 
> 

'var' is shorter than 'mutable', so that might be a good option for a 
keyword in this case.  Depends if D is going to adopt the C++ 'mutable' 
concept, in that case reusing mutable might be a better option.

Pascal uses 'var' for out parameters, but it works like inout or ref in 
D, not quite like the intended meaning of mutable in D.  But still...