Optional

• Monad

why

• To get compile time exceptions rather than runtime exceptions

  • get feed back faster

• when you return something that may or may not exist

When not to use

• When return a collection, use empty list or the collection

• when the return value is always going to exist

• As a parameter

  • will need to do an ifPresent check and pass in the optional

  • use two separate methods (overloading), one with no param and another with the param

Links

• https://youtu.be/Ej0sss6cq14?si=89GPkgKS92zlXaMt Optional - The Mother of All Bikesheds by Stuart Marks