"Walter Bright" <newshou...@digitalmars.com> wrote in message news:ie8j0d$1a9...@digitalmars.com... > Nick Sabalausky wrote: >> But now, when you or someone else comes along and compiles it for OS_D, >> it's going to silently use the code for OS_B and OS_C *regardless* of >> whether or not that's correct for OS_D. > > That particular problem has bitten me probably hundreds of times, and > every other programmer as well. And it happens for lots of things besides > OS versions.
I can believe that. > > Though a programmer can always defeat the intent. At one point, someone > added "support" for another OS in Phobos by copy/pasting the support > declarations from another OS into the version block. Naturally, it was all > wrong. The problem was I didn't know which parts were copy/pasted, so I > had to go through every single declaration one at a time. A good comparison utility like Beyond Compare or Ultra Compare would have made that easy. I used Beyond Compare for the first time nearly ten years ago, and from that moment until this day it's one of those things, like a decent text editer, that I just couldn't do without.
