Adam Giese’s “Level up your .filter game” does something really interesting and helpful: it introduces a bunch of fairly sophisticated functional programming concepts without ever mentioning functional programming and without ever using any of the jargon associated with those terms. “Level up your .filter game” gives you a reason to use some standard FP tools—currying, higher-order functions, composition—in your ordinary work. It’s pitched at working JS developers. It gives a ...
