Re: Noob question on strings.
Hi all, > I think the reader gets confused after your initial "C:\dev\java > \clojure\clj-repl.bat" > If you start the repl again and try the string with \\ it works fine. > Also, when the reader gets confused by the above string, it seems to > miss the " at the end. If you enter a " by itself it seems to right > itself: Yes, thanks, you are all quite right. The reader had got confused somehow, and was treating the input as an unterminated string. Just putting a " on its own solved the problem. --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: Noob question on strings.
On Dec 9, 6:47 am, Ant <[EMAIL PROTECTED]> wrote: > Hi all, > > I've just started looking with interest at the language, and have > decided to port some of my smaller programs and scripts to Clojure as > a way of getting to know the language. I am stumbling over Strings at > the moment, as I am trying to read a file. I have tried the following: > > user=> "C:\dev\java\clojure\clj-repl.bat" > ")\n" > user=> java.lang.Exception: Invalid token: C: > java.lang.Exception: ReaderError:(8,1) Invalid token: C: > at clojure.lang.LispReader.read(LispReader.java:164) > at clojure.lang.Repl.main(Repl.java:68) > Caused by: java.lang.Exception: Invalid token: C: > at clojure.lang.LispReader.interpretToken(LispReader.java:266) > at clojure.lang.LispReader.read(LispReader.java:156) > ... 1 more > > OK, so that didn't work. I read the docs on Strings: > > Strings - Enclosed in "double quotes". May span multiple lines. > Standard Java escape characters are supported. > > So next I tried, thinking it may be the backslashes that were the > problem, and needed escaping: > > "C:\\dev\\java\\clojure\\clj-repl.bat" > "\n" > user=> java.lang.Exception: Invalid token: C: > java.lang.Exception: ReaderError:(10,1) Invalid token: C: > at clojure.lang.LispReader.read(LispReader.java:164) > at clojure.lang.Repl.main(Repl.java:68) > Caused by: java.lang.Exception: Invalid token: C: > at clojure.lang.LispReader.interpretToken(LispReader.java:266) > at clojure.lang.LispReader.read(LispReader.java:156) > ... 1 more > > Same error, and it seems to me that the double quoted string isn't > being accepted as a string literal. I tried converting the path to > forward slashes: > > java.lang.Exception: No such namespace: C:/dev/java/clojure > clojure.lang.Compiler$CompilerException: NO_SOURCE_FILE:0: No such > namespace: C:/dev/java/clojure > at clojure.lang.Compiler.analyze(Compiler.java:3713) > at clojure.lang.Compiler.analyze(Compiler.java:3671) > at clojure.lang.Compiler.eval(Compiler.java:3895) > at clojure.lang.Repl.main(Repl.java:75) > Caused by: java.lang.Exception: No such namespace: C:/dev/java/clojure > at clojure.lang.Compiler.resolveIn(Compiler.java:3998) > at clojure.lang.Compiler.resolve(Compiler.java:3972) > at clojure.lang.Compiler.analyzeSymbol(Compiler.java:3955) > at clojure.lang.Compiler.analyze(Compiler.java:3686) > ... 3 more > > So it seems that this isn't being treated as a string at all! It > thinks that the slashes are denoting a namespace. What am I missing > here? I think the reader gets confused after your initial "C:\dev\java \clojure\clj-repl.bat" If you start the repl again and try the string with \\ it works fine. Also, when the reader gets confused by the above string, it seems to miss the " at the end. If you enter a " by itself it seems to right itself: $ java -jar clojure.jar Clojure user=> "C:\dev\java\clojure\clj-repl.bat" java.lang.Exception: Unsupported escape character: \d java.lang.Exception: ReaderError:(1,1) Unsupported escape character: \d at clojure.lang.LispReader.read(LispReader.java:164) at clojure.lang.Repl.main(Repl.java:68) -- snip -- user=> "C:\\dev\\java\\clojure\\clj-repl.bat" "\n" user=> java.lang.Exception: Invalid token: C: java.lang.Exception: ReaderError:(2,1) Invalid token: C: at clojure.lang.LispReader.read(LispReader.java:164) at clojure.lang.Repl.main(Repl.java:68) Caused by: java.lang.Exception: Invalid token: C: at clojure.lang.LispReader.interpretToken(LispReader.java:266) at clojure.lang.LispReader.read(LispReader.java:156) ... 1 more -- snip -- user=> " " \n" user=> "C:\\dev\\java\\clojure\\clj-repl.bat" "C:\\dev\\java\\clojure\\clj-repl.bat" user=> --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: Noob question on strings.
On Tue, Dec 9, 2008 at 1:47 PM, Ant <[EMAIL PROTECTED]> wrote: > > Hi all, > > I've just started looking with interest at the language, and have > decided to port some of my smaller programs and scripts to Clojure as > a way of getting to know the language. I am stumbling over Strings at > the moment, as I am trying to read a file. I have tried the following: > > user=> "C:\dev\java\clojure\clj-repl.bat" > ")\n" > user=> java.lang.Exception: Invalid token: C: > java.lang.Exception: ReaderError:(8,1) Invalid token: C: >at clojure.lang.LispReader.read(LispReader.java:164) >at clojure.lang.Repl.main(Repl.java:68) > Caused by: java.lang.Exception: Invalid token: C: >at clojure.lang.LispReader.interpretToken(LispReader.java:266) >at clojure.lang.LispReader.read(LispReader.java:156) >... 1 more [...] > java.lang.Exception: No such namespace: C:/dev/java/clojure [...] It looks like you've got an unterminated string before you start. e.g.: $ java -cp clojure.jar clojure.main Clojure user=> string-that-does-not-start-with-a-quote" java.lang.Exception: Unable to resolve symbol: string-that-does-not-start-with-a-quote in this context (NO_SOURCE_FILE:0) user=> "C:\dev\something" "\n" user=> java.lang.Exception: Invalid token: C: user=> java.lang.Exception: Unsupported character: \dev user=> java.lang.Exception: Unsupported character: \something user=> So try restarting the repl. Or else type a single " and press Enter and see what you get. If you don't get something like "\n" printed by itself with no exceptions, try it again. -- Michael Wood <[EMAIL PROTECTED]> --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: Noob question on strings.
On Dec 9, 4:47 pm, Ant <[EMAIL PROTECTED]> wrote: > Hi all, > > I've just started looking with interest at the language, and have > decided to port some of my smaller programs and scripts to Clojure as > a way of getting to know the language. I am stumbling over Strings at > the moment, as I am trying to read a file. I have tried the following: > > user=> "C:\dev\java\clojure\clj-repl.bat" > ")\n" > user=> java.lang.Exception: Invalid token: C: > java.lang.Exception: ReaderError:(8,1) Invalid token: C: > at clojure.lang.LispReader.read(LispReader.java:164) > at clojure.lang.Repl.main(Repl.java:68) > Caused by: java.lang.Exception: Invalid token: C: > at clojure.lang.LispReader.interpretToken(LispReader.java:266) > at clojure.lang.LispReader.read(LispReader.java:156) > ... 1 more > > OK, so that didn't work. I read the docs on Strings: > > Strings - Enclosed in "double quotes". May span multiple lines. > Standard Java escape characters are supported. > > So next I tried, thinking it may be the backslashes that were the > problem, and needed escaping: > > "C:\\dev\\java\\clojure\\clj-repl.bat" > "\n" > user=> java.lang.Exception: Invalid token: C: Seems to work for me (on Linux with svn HEAD): user=> "C:\\dev\\java\\clojure\\clj-repl.bat" "C:\\dev\\java\\clojure\\clj-repl.bat" user=> "C:/dev/java/clojure/clj-repl.bat" "C:/dev/java/clojure/clj-repl.bat" user=> "C:" "C:" What release are you using? I am assuming you are on windows based on the string. Maybe you can try with the latest svn sources. Parth > java.lang.Exception: ReaderError:(10,1) Invalid token: C: > at clojure.lang.LispReader.read(LispReader.java:164) > at clojure.lang.Repl.main(Repl.java:68) > Caused by: java.lang.Exception: Invalid token: C: > at clojure.lang.LispReader.interpretToken(LispReader.java:266) > at clojure.lang.LispReader.read(LispReader.java:156) > ... 1 more > > Same error, and it seems to me that the double quoted string isn't > being accepted as a string literal. I tried converting the path to > forward slashes: > > java.lang.Exception: No such namespace: C:/dev/java/clojure > clojure.lang.Compiler$CompilerException: NO_SOURCE_FILE:0: No such > namespace: C:/dev/java/clojure > at clojure.lang.Compiler.analyze(Compiler.java:3713) > at clojure.lang.Compiler.analyze(Compiler.java:3671) > at clojure.lang.Compiler.eval(Compiler.java:3895) > at clojure.lang.Repl.main(Repl.java:75) > Caused by: java.lang.Exception: No such namespace: C:/dev/java/clojure > at clojure.lang.Compiler.resolveIn(Compiler.java:3998) > at clojure.lang.Compiler.resolve(Compiler.java:3972) > at clojure.lang.Compiler.analyzeSymbol(Compiler.java:3955) > at clojure.lang.Compiler.analyze(Compiler.java:3686) > ... 3 more > > So it seems that this isn't being treated as a string at all! It > thinks that the slashes are denoting a namespace. What am I missing > here? --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
