State of Play

[Steven Schveighoffer]

On Thu, 26 Mar 2009 17:27:25 -0400, Walter Bright  
<newshound1 at digitalmars.com> wrote:

> Steven Schveighoffer wrote:
>> what needs to be done:
>>  1. Make Tango build on top of druntime.  I just merged from trunk  
>> yesterday, which was about 300 files, so most likely there will be  
>> compile issues ;)
>> 2. Const-ify everything.  Some parts are already done.
>> 3. Make all opApply's scoped properly.
>>  Not sure what happens after that, but step 2 alone is a ton of work.   
>> In addition, there are some blocker bugs in DMD (1645 and 2524 right  
>> now) that prevent a complete port.
>>  When the shared/unshared paradigm is released, there's probably  
>> another ton of work to do :)
>
> You can already used shared/unshared. The semantics aren't implemented,  
> but the type system support for it is.

But is it enforced?  Basically, I want to focus on one new language aspect  
at a time.  As far as I know, with the current D compiler, I can access a  
global not marked shared from multiple threads, no?  When shared/unshared  
is actually implemented, each thread gets its own copy, right?  It's still  
a fuzzy concept to me, and it seems like a waste of time to try and write  
code to use features that don't yet exist.  The longer I can put it off,  
the better.

The only impact I've seen so far is that singletons in Tango were  
sometimes named 'shared', so I had to change the names because of the  
reserved keyword.

-Steve