28 Sep
2010
28 Sep
'10
5:33 p.m.
At Tue, 28 Sep 2010 10:00:54 -0500, Andrew Sutton wrote:
It seems to me that writing constraints in terms of valid expressions gives you flexibility when you want it, but doesn't preclude the strengthening of requirements when needed.
It's not that there's anything you *can't* express with valid expressions, it's that they're difficult to use correctly, and the most natural way of using them creates a big mess for algorithm writers. Furthermore, they don't offer any compelling value over the alternative. -- Dave Abrahams BoostPro Computing http://www.boostpro.com