The problem never was the lack of OO, the problem is that you have to repeat yourself. There will come a type when you have a type that behaves a certain way (c

The problem never was the lack of OO, the problem is that you have to repeat yourself. There will come a type when you have a type that behaves a certain way (certain members, argument of certain functions) and then you will make a type that is mostly the same thing, but then slightly different (maybe one attribute is replaced by something else). You'll have to adapt everything you reproduce a lot of your logic or jump trough very annoying hoops to have your existing logic work with this new type. If from OO, I could have only Java-like interfaces, it would probably be enough. Implicit type conversions could also work I suppose.