Plus42 Equations, Preview Release

[Thomas Okken]

I don't like the idea of combining PARSE and EVAL: equation objects are rather heavyweight and shouldn't be created needlessly. The whole point of the design is to make evaluation fast, so you'll get performance comparable to regular user code programs when using them with the numerical solver and integrator.

I am thinking of making EVAL take a parameter, so you could store equations as regular variables and then execute them by name; that way you could execute them in such a way that they would have full access to the stack and not take up any space there.