Julia is a really interesting language that was designed around some people's dissatisfaction with the languages traditionally used in scientific computing. One

Julia is a really interesting language that was designed around some people's dissatisfaction with the languages traditionally used in scientific computing. One of the core ideas is a high degree of modularity and composability. I think the way it's type system and multiple and dispatch work really nicely reflects a lot of ideas in mathematics and make it easy to implement and extend mathematical ideas.