million dollar mistakes in programming languages:nulls,exception,color functions , fragile classes

1. #NULL. use options or maybe monads
2. #Exceptions. Use error as a value and monadic interfaces. the even better way is algebraic effects
3. coloring functions. #await, etc., use algebraic effects and handlers
4. concurrent programming and locks: actor model and go-like channels could help
5. Fragile classes and overuse of inheritance: prototypal inheritance and data-oriented programming

https://medium.com/@volodymyrpavlyshyn/multidollar-common-programming-language-mistakes-and-better-approaches-d0dc0d8e084b ... https://www.youtube.com/watch?v=S0iuRrTBFX4