What causes an API to cross the line into becoming a DSL? Is it really a ‘I’ll know it when I see it’ situation? I’ve been searching for an answer for years. And I think I found it in a paper I read recently for this podcast: Lisp: A language for stratified design. In this episode, we go over the main factor that makes an API a DSL: the closure property.
Eric Normand is an experienced functional programmer, trainer, speaker, writer, and consultant on all things FP. He started writing Lisp in 2000 and is now a Clojure expert, producing the most comprehensive suite of Clojure training material at PurelyFunctional.tv. He has a popular Clojure newsletter and blog. He also consults with companies to use functional programming to better serve business objectives. You can find him speaking internationally at programming conferences.
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