> functions generally and especially pure functions are easier to reason about than the object-oriented programming (OOP) paradigm. ...goes on to list a whole

> functions generally and especially pure functions are easier to reason about than the object-oriented programming (OOP) paradigm. ...goes on to list a whole bunch of object-oriented functions. And, under "Array", specifically points out: > These array functions do not modify the original array, but return a new array or a value based on the input array. Yes. As the article repeatedly demonstrates, but... seemingly fails to understand?... OOP and pure functional programming are not mutually exclusive! Edit: Also, just realised that the article has weirdly missed String.length() and Array.length() as not mutating their implicit `this` parameter?