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This problem was solved brilliantly by Clojure. Everything is immutable by default, and modifications of references happen at explicit points in the flow, with

This problem was solved brilliantly by Clojure. Everything is immutable by default, and modifications of references happen at explicit points in the flow, with well-defined semantics.

Locke1689 16y ago
To be fair, I believe this behavior was just copied from Lisp, Scheme, Haskell, and ML.
- adambyrtek 16y ago
  The fundamental ideas come from existing languages, nobody is trying to contradict that. Clojure builds on the past, but its rich abstractions for concurrency and persistent data structures make it unique.
  - sid0 16y ago
    What "abstractions for concurrency and persistent data structures" does Clojure have that aren't there in Lisp, Scheme, ML or Haskell?
dons 16y ago
This problem was solved brilliantly by computer science in the 1970s. FTFY :-)