> > To be widely used, a language should support interlanguage working, possess extensive libraries, be highly portable, have a stable and easy to install imple

> > To be widely used, a language should support interlanguage working, possess extensive libraries, be highly portable, have a stable and easy to install implementation, come with debuggers and profilers, be accompanied by training courses, and have a good track record on previous projects. > The first five of those factors, which are mainly technical, are provided by almost all of the functional languages. That seems like a very generous statement. Unless the author is talking about some functional language I don't know. Is there an FP language which really has the extensive libraries of Java / Python / C++ / JS ? (You might argue with Clojure and anything with a FFI..) Is there an FP that has a debugger and profiler as Visual Studio for C++, Eclipse for Java, and your browser for JS ? (No, you REPL does not count as debugger.) Is there any language that as `interlanguage working` (ok, this one is unfair, only JVM and C really count...) Is there an FP that has an implementation that's not a nightmare to install ? (ok, this one's even more unfair - everything is a nightmare to install...)