The problem is that only part of a solution to a problem is really in your control. Each has a potentially very large number of solutions, most of them are equi

The problem is that only part of a solution to a problem is really in your control. Each has a potentially very large number of solutions, most of them are equivalent (renaming of variables, isomorphic control flow etc.), but some are inequivalent. For example in Haskell you could at least use iostreams, pipes, conduit or lazy io to solve the read file in and print its lines. You can't expect a developer to be familiar with every choice the Library implementors made, especially since lots of libraries do not really have stellar documentation.