Thanks for sharing this. I'm glad to see symbolics being used, even if it isn't Python.
I would suggest putting a LICENSE in the project, so it is clear to people that they can use the code (if you're unsure what to use, I would suggest BSD, the same as SymPy). Aaron Meurer On Thu, Jan 15, 2015 at 7:38 PM, yueming liu <[email protected]> wrote: > Just finished a prototype of the project SymJava ( > https://github.com/yuemingl/SymJava ) which is similar to sympy. > Actually, I borrowed some ideas from sympy. Thanks all the sympy > contributors. > > The reason to develop this library is that sympy can NOT run on JPython > :(. I have another Java library FuturEye for numerical computation to solve > PDE constrained inverse problems. Symbolic computation is important for > this library since it will reduce a huge amount of time with automatic > functional derivative computation. > > Here is a piece of example code of SymJava: > > Expr expr = x + y * z; > > System.out.println(expr); //x + y*z > > Expr expr2 = expr.subs(x, y*y); > > System.out.println(expr2); //y^2 + y*z > > System.out.println(expr2.diff(y)); //2*y + z > > Func f = new Func("f1", expr2.diff(y)); > > System.out.println(f); //f1(y,z) > > BytecodeFunc func = f.toBytecodeFunc(); //Similar to the lambdify in sympy > > System.out.println(func.apply(1,2)); //4.0 > > There are two important features: > > 1. Operator Overloading is implemented by using > https://github.com/amelentev/java-oo > > 2. Lambdify in sympy is implemented in SymJava by using BCEL library > > Let me know if any one interested in this? Just send me an email: > nkliuyuemingATgmail.com > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/8262f07b-a540-4b71-8e19-303da5141ead%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/8262f07b-a540-4b71-8e19-303da5141ead%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6KRf0w5PxWyQbAmcZVEg0bHm2r0%3D61gcSSTJaDxirnT_g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
