Julia fits the bill quite well in my opinion: * features: you have an extensive standard library, macros, high level constructs (like generators, asynchronous

Julia fits the bill quite well in my opinion: * features: you have an extensive standard library, macros, high level constructs (like generators, asynchronous programming, ...) * performance: julia is based on LLVM and as long the code is type-stable and avoids memory allocation in hot loops, the performance is similar to C or Fortran. * usability: you can also program at a very high level like you would do in matlab or python/numpy.