Eval vs the repl
I had previously assumed that the clojure repl effectively just did
(eval (read-string input)). That doesn't seem to be the case eg:
user [do (inc 1)]
CompilerException java.lang.RuntimeException: Unable to resolve
symbol: do in this context, compiling:(NO_SOURCE_PATH:1:1)
user (eval '[do (inc 1)])
2
nil
user (load-string [do (inc 1)])
2
nil
user ^{:line 11, :column 20} []
[]
nil
user (eval ^{:line 11, :column 20} [])
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
user (load-string ^{:line 11, :column 20} [])
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
What can I do to eval a string in the same way that the repl does?
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Re: Eval vs the repl
What repl are you using? I think it's doing something weird.
java -cp clojure-1.5.1.jar clojure.main
user= [do (inc 1)]
2
user ^{:line 11, :column 20} []
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
--Aaron
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Re: Eval vs the repl
Huh, I'm using nrepl.el but if I use lein repl I get the same results as you.
On 28 August 2013 18:16, Aaron Cohen aa...@assonance.org wrote:
What repl are you using? I think it's doing something weird.
java -cp clojure-1.5.1.jar clojure.main
user= [do (inc 1)]
2
user ^{:line 11, :column 20} []
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
--Aaron
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Re: Eval vs the repl
On Wednesday, August 28, 2013 12:13:54 PM UTC-4, Jamie Brandon wrote: user [do (inc 1)] Just curious: what do you expect that to do? To me it looks like a 2-element vector... (containing a `do` special form and then the value 2), but my repl yields 2 as the result (?). -- -- 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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Eval vs the repl
I think you may be tripping over this
bug: http://dev.clojure.org/jira/browse/CLJ-1184
which is waiting for Rich's approval to go into 1.6.
Alex
On Wednesday, August 28, 2013 11:13:54 AM UTC-5, Jamie Brandon wrote:
I had previously assumed that the clojure repl effectively just did
(eval (read-string input)). That doesn't seem to be the case eg:
user [do (inc 1)]
CompilerException java.lang.RuntimeException: Unable to resolve
symbol: do in this context, compiling:(NO_SOURCE_PATH:1:1)
user (eval '[do (inc 1)])
2
nil
user (load-string [do (inc 1)])
2
nil
user ^{:line 11, :column 20} []
[]
nil
user (eval ^{:line 11, :column 20} [])
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
user (load-string ^{:line 11, :column 20} [])
ClassCastException java.lang.Long cannot be cast to java.lang.Integer
clojure.lang.Compiler.eval (Compiler.java:6597)
What can I do to eval a string in the same way that the repl does?
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