How would I get something similar to the following?:
(evaluate-text "(+ 1 2)") ; resolves to 3
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user> (eval (read-string "(+ 1 2)"))
3
You probably shouldn't ever need to do this. Macros and fns make this kind of thing unnecessary 99% of the time. This is quite brittle, and can be unsafe if these strings are coming from user input, and so on.
Brian Carper
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2Well I want to do something radically unsafe: a REPL chatbot. – Nick Orton Dec 11 '09 at 15:43
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There is a clojurebot in #clojure. – Hong Jiang Dec 13 '09 at 19:01
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8load-string does exactly what he is looking for – Abhijith Dec 24 '09 at 17:39
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2you need it if you are saving Clojure data structures to a file for storage and then later restoring them, for example. – rplevy Dec 16 '10 at 02:26
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In ClojureScript `read-string` is in the `cljs.reader/read-string` namespace, not `core` like in Clojure. – Kris May 01 '15 at 13:48
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How similar does it have to be? Clojure's eval works on lists, so:
(eval (list + 1 2)) #=> 3
David Seiler
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I know about eval, but I don't think it works for me. I really want to evaluate a "String" – Nick Orton Dec 11 '09 at 02:35