D1 -> D2

[Denis Koroskin]

On Thu, 18 Nov 2010 22:19:12 +0300, Walter Bright  
<newshound2 at digitalmars.com> wrote:

> Steven Schveighoffer wrote:
>> My recommendation -- when you are ready, switch wholly to D2.  Don't  
>> bother with compatibility, it's just not possible.
>
>  From what you wrote, it appears that most of the difficulties were in  
> dealing with strings.

No, it's not. From my experience, a bigger issue is that

version (D2) {
    /* some D2 only code involving const etc */
}

simply won't compile in D1, because even if it's D2-only the code needs to  
be correct D1 code as well.