Yes, JavaScript is a Lisp
Some people will tell you that JavaScript isn’t Scheme. Of course it isn’t: Scheme is Scheme, JavaScript is JavaScript. There are excellent reasons why JavaScript is nothing like Scheme. Pretty much everything that makes Scheme Scheme is nowhere to be found in JavaScript. One of the fundamental ideas in Scheme is to be minimal and elegant to the point of pain. In early Schemes, there was no real b
The Predicate Module Pattern
In Ruby, modules are often used to mix functionality into concrete classes. Another excellent pattern is to extend objects as a way of avoiding monkey-patching classes you do not “own.” There’s a third pattern that I find handy and expressive: Using modules as object predicates. Let’s begin by defining the problem: Representing object predicates. We have some objects that represent entities of som
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