Quick Functional Programming

Why learn functional programming? Isn’t that some complicated ivory-tower technique used only in obscure languages like Haskell? In fact, functional programming is actually very simple. It’s also very powerful, as Haskell demonstrates by throwing away all the conventional programming tools and using only functional programming features. But it doesn’t have to be done that way. Functional programming is a power tool that you can use in addition to all your usual tools, to whatever extent your cur