alt Hacker NewsClarifying Clojure had them in 2007. Scala implementations were inspired by Clojure’s. Both Odersky and Bagwell have given credit to Hickey.
Clarifying Clojure had them in 2007. Scala implementations were inspired by Clojure’s. Both Odersky and Bagwell have given credit to Hickey.
And Hickey himself said he adapted ideas from Bagwell's HAMTs. And tries are 60 years old.
I have always thought Hickeys main contribution was making it default in a coherent way, and proved it could be done. Before clojure most peoplle still thought immutable data structures were too I practical.