Yes, I absolutely agree that type systems helps a lot. I would actually not use a dynamically typed language for any critical system. This actually increases the number of tests and his right to an unbearable amount. I did that once...
Actually, I’m also a big fan of state machines. I am an electrical engineer and I was working for years in embedded projects. I actually replaced a lot of code that had bugs frequently to use proper state machines. However, because we use Java I needed to write at least a couple of tests.
So, there is always some nice language that may improves your code or reduces the number of tests you need to write. I actually like Haskell and Erlang for different reasons very much. But I would not use them for professional projects because I would not be able to hire any developers in my team. For my professional life I need to stick with Java which is at least not dynamically typed although there is a lot to be improved...
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Yes, I absolutely agree that type systems helps a lot. I would actually not use a dynamically typed language for any critical system. This actually increases the number of tests and his right to an unbearable amount. I did that once...
Actually, I’m also a big fan of state machines. I am an electrical engineer and I was working for years in embedded projects. I actually replaced a lot of code that had bugs frequently to use proper state machines. However, because we use Java I needed to write at least a couple of tests.
So, there is always some nice language that may improves your code or reduces the number of tests you need to write. I actually like Haskell and Erlang for different reasons very much. But I would not use them for professional projects because I would not be able to hire any developers in my team. For my professional life I need to stick with Java which is at least not dynamically typed although there is a lot to be improved...