I really like the Julia language. It's designed for scientific computing but looks like a pretty good general purpose language to me. What (if anything) makes it unsuitable for general purpose programming (e.g. web apps)? Lack of libraries is the obvious one but is there something more "unfixable"?
There is no reason not to use Julia for general purpose programming. Julia is a counterexample to the premise that technical computing languages (e.g. Matlab, R) cannot also be suitable for general purpose computing.