Stephen Gross wrote:

The idea is that you can encapsulate an algebraic function in a standalone 'Equation' instance, and dynamically reassign that equation. It's built off of boost::lambda (of course), but it lets you name the variables rather than just refer to them with the standard placeholders (_1, _2, etc.). Is it worthwhile for me to post the toolkit code on this group?

I'd love to see this. But it should be called "Expression", not "Equation" - the concepts you'd be creating aren't "equations". Equation: x + y = z Expression: x + y - James