Mastering JavaScript Functional Programming - Second Edition

Currying with eval()

There's another interesting way of currying a function—by creating a new one by means of eval(). Yes—that unsafe, dangerous eval()! (Remember what we said earlier: this is for learning purposes, but you'll be better off avoiding the potential security headaches that eval() can bring!) We will also be using the range() function that we wrote in the Working with ranges section of Chapter 5, Programming Declaratively – A Better Style.

Languages such as LISP have always had the possibility of generating and executing LISP code. JavaScript shares that functionality, but it's not often used—mainly because of the dangers it may entail! However, in our case, since we want to generate new functions, it seems logical to take advantage ...