Dear all,
I am quite new to clojure, and I can't find any good way to generate
code at runtime.
Of course, there is eval, but eval is not very competent in manipulating
namespace and bindings at runtinme.
For example, this:
- (binding [*ns* *ns*]
(eval '(do (ns Blop (:gen-class))
(println (def x 0))
))
(eval '(do (ns Blip (:use Blop)) (println Blop/x)))
)
is unhappy because it can't see any .class for Blop.
- (binding [*ns* *ns*]
(eval '(do (ns Blop (:gen-class))
(println (def x 0))
))
(eval '(println clojure.core/x))
)
works in a compiled .class but not in the REPL
- (binding [*ns* *ns*]
(eval '(do (ns Blop (:gen-class))
(println (def x 0))
))
(eval '(println user/x))
)
Works in the REPL but not in a compiled .class.
I tried also to play a bit with load-string, but without any luck.
It must be possible to generate new bindings or even namespaces at
runtime, as the REPL does just that.
Is there a deep reason why it is difficult?
Is there a lot of magic in the REPL?
Would it be possible to pull this magic out in a reusable way?
Can I try to do it or it is really difficult/impossible?
I think, it would quite Lispy for Clojure to have very few differences
between REPL and compiled runtime.
Thanks a lot for your help,
Best regards,
Nicolas.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
-~----------~----~----~----~------~----~------~--~---
