Use case: eliminate hidden allocations in buildPath

[Andrei Alexandrescu]

Hello,


Walter and I were talking about eliminating the surreptitious 
allocations in buildPath:

http://dlang.org/phobos/std_path.html#.buildPath

We'd need to keep the existing version working, so we're looking at 
adding one or more new overloads. We're looking at giving the user the 
option to control any needed memory allocation (or even arrange things 
such that there's no memory allocated at all).

It's a generous design space, so although we have a couple of ideas 
let's hear others first.


Thanks,

Andrei