When you hear ‘Monad’, think ‘Chainable’
There comes a point in every Functional Programmer’s life where they feel the curse of the Monad has lifted and they must now explain Monads to their friends who just don’t get it. What follows is probably wrong and confusing, cause there is no escaping the curse. But here goes…
Suppose you have a system property that contains the name of another system property, like:
KEYNAME=FOO
And you want the value of FOO, like: