‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful! Last week, I casually dropped the term “higher-order function” ...

Asynchronous code (async code) says: go do something while I do other things, then let me know what happened when the results are ready. Also known as concurrency, async is important in a variety of ...

Pure functions are basic coding building blocks within a program. A pure function is predictable, adaptable, and produce no side effects. Impure functions have the ability to mutate a property or ...