Probably depends on the code base, but having worked with Scala for a few years, there are a lot of things that causes development overhead. First things that c

Probably depends on the code base, but having worked with Scala for a few years, there are a lot of things that causes development overhead. First things that come to mind: slow compile times, there are usually several ways to do one thing and also docs/guides are inconsistent, overused operator overloading in libraries (almost have to learn new DSL syntax for some libs), and it is not always easy to comprehend code by other developers.