dsimcha wrote:
I've been thinking about where a Rational struct could lead, and realized that the next step is to give D some capabilities for dealing with symbols. For example, it would be nice to have something like:auto foo = symRational!SomeBigInt("1 / e + pi / 2 + G"); // Do a whole bunch of manipulations on foo. writeln(foo); // Symbolic expression. writeln(toReal(foo, constVal("G", 6e-11), constVal("pi", 3.14), constVal("e", 2.718)); Of course, now we're starting to talk about building a basic computer algebra system into Phobos, or at least into some stand-alone lib. While we clearly don't have the manpower to do a "real" CAS, some basic CAS-like capabilities would be nice.
What's CAS? Andrei
