Re: Inflection on clojure.java.io/reader and writer
Welcome to a world of values, not containers (the blue pieces can only fit in the blue container, the red ones you get the picture) or as Rich says places. I always thought that by places he means mutable identifiers; languages like Haskell have a lot of luck with type-checking immutable *values*. I don't see how appreciation for values over places leads to lack of type-checking. On Wednesday, February 6, 2013 4:50:54 AM UTC+4, Luc wrote: You are not defining a type here. A type hint is just that... a hint so the compiler can optimize the code it generates to call the readLine method on this specific object class. As an example, if io/reader returned an object of a different class at runtime than BufferedReader, it would not fail even if the hint says expect an object of this class. The generated code testing that the object is not of the hinted class would resort to reflection on the object class to find if the readLine method exists. If not you will get the usual runtime error saying that the method does not exists. The Clojure compiler has no type checking equivalent to Java, C, ... You can define stuff that is not even bound to a value, it would be hard to type check on these at compile time, no ? Welcome to a world of values, not containers (the blue pieces can only fit in the blue container, the red ones you get the picture) or as Rich says places. Luc P. That's funny, I did exactly the same thing and wrote BufferedReader for both. DOH! Although I have no idea how the internals of type hinting is, I do think it's peculiar that there doesn't seem to be type error checking, even though we are explicitly defining the type. I would feel like it should error, instead of falling back on reflection. Kanwei On Monday, February 4, 2013 12:36:51 PM UTC-5, AtKaaZ wrote: in other words: this: (let [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) becomes this: (let [^java.io.BufferedReader in (clojure.java.io/reader src) ^java.io.BufferedWriter out (clojure.java.io/writer dest) and it works for me too. (but I wasted some time by having BufferedReader in both places) On Mon, Feb 4, 2013 at 6:26 PM, Andy Fingerhut andy.fi...@gmail.comjavascript: wrote: I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy
Re: Inflection on clojure.java.io/reader and writer
That's funny, I did exactly the same thing and wrote BufferedReader for both. DOH! Although I have no idea how the internals of type hinting is, I do think it's peculiar that there doesn't seem to be type error checking, even though we are explicitly defining the type. I would feel like it should error, instead of falling back on reflection. Kanwei On Monday, February 4, 2013 12:36:51 PM UTC-5, AtKaaZ wrote: in other words: this: (let [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) becomes this: (let [^java.io.BufferedReader in (clojure.java.io/reader src) ^java.io.BufferedWriter out (clojure.java.io/writer dest) and it works for me too. (but I wasted some time by having BufferedReader in both places) On Mon, Feb 4, 2013 at 6:26 PM, Andy Fingerhut andy.fi...@gmail.comjavascript: wrote: I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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+u...@googlegroups.com javascript:. For more
Re: Inflection on clojure.java.io/reader and writer
*I would love it if it would be* at least a warning if not even better *an error*, but I feel it wouldn't be idiomatic clojure to err, but to warn would maybe be accepted... On Tue, Feb 5, 2013 at 6:34 PM, Kanwei Li kan...@gmail.com wrote: That's funny, I did exactly the same thing and wrote BufferedReader for both. DOH! Although I have no idea how the internals of type hinting is, I do think it's peculiar that there doesn't seem to be type error checking, even though we are explicitly defining the type. I would feel like it should error, instead of falling back on reflection. Kanwei On Monday, February 4, 2013 12:36:51 PM UTC-5, AtKaaZ wrote: in other words: this: (let [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) becomes this: (let [^java.io.BufferedReader in (clojure.java.io/reader src) ^java.io.BufferedWriter out (clojure.java.io/writer dest) and it works for me too. (but I wasted some time by having BufferedReader in both places) On Mon, Feb 4, 2013 at 6:26 PM, Andy Fingerhut andy.fi...@gmail.comwrote: I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/** 4696105 https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at
Re: Inflection on clojure.java.io/reader and writer
You are not defining a type here. A type hint is just that... a hint so the compiler can optimize the code it generates to call the readLine method on this specific object class. As an example, if io/reader returned an object of a different class at runtime than BufferedReader, it would not fail even if the hint says expect an object of this class. The generated code testing that the object is not of the hinted class would resort to reflection on the object class to find if the readLine method exists. If not you will get the usual runtime error saying that the method does not exists. The Clojure compiler has no type checking equivalent to Java, C, ... You can define stuff that is not even bound to a value, it would be hard to type check on these at compile time, no ? Welcome to a world of values, not containers (the blue pieces can only fit in the blue container, the red ones you get the picture) or as Rich says places. Luc P. That's funny, I did exactly the same thing and wrote BufferedReader for both. DOH! Although I have no idea how the internals of type hinting is, I do think it's peculiar that there doesn't seem to be type error checking, even though we are explicitly defining the type. I would feel like it should error, instead of falling back on reflection. Kanwei On Monday, February 4, 2013 12:36:51 PM UTC-5, AtKaaZ wrote: in other words: this: (let [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) becomes this: (let [^java.io.BufferedReader in (clojure.java.io/reader src) ^java.io.BufferedWriter out (clojure.java.io/writer dest) and it works for me too. (but I wasted some time by having BufferedReader in both places) On Mon, Feb 4, 2013 at 6:26 PM, Andy Fingerhut andy.fi...@gmail.comjavascript: wrote: I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default
Re: Inflection on clojure.java.io/reader and writer
Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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: Inflection on clojure.java.io/reader and writer
I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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. -- -- 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: Inflection on clojure.java.io/reader and writer
in other words: this: (let [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) becomes this: (let [^java.io.BufferedReader in (clojure.java.io/reader src) ^java.io.BufferedWriter out (clojure.java.io/writer dest) and it works for me too. (but I wasted some time by having BufferedReader in both places) On Mon, Feb 4, 2013 at 6:26 PM, Andy Fingerhut andy.finger...@gmail.comwrote: I don't have CCW Eclipse installed to test, but by saving that file on my Mac (should also work on Linux) in a subdirectory obj, and editing it to add the ^java.io.BufferedReader in and ^java.io.BufferedWriter out type hints as suggested by Luc P. earlier in this thread, I was able to eliminate the reflection warnings: % mkdir obj % cp gist_file obj/solutions.clj # Original file without the type hints gives reflection warnings as expected % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj Reflection warning, solution.clj:38 - reference to field readLine can't be resolved. Reflection warning, solution.clj:45 - reference to field readLine can't be resolved. Reflection warning, solution.clj:63 - reference to field newLine can't be resolved. Reflection warning, solution.clj:54 - reference to field newLine can't be resolved. # Now I hand-edit obj/solutions.clj to add the type hints, and recompile. No reflection warnings. % java -Dclojure.compile.path=./obj -cp clojure-1.4.0.jar:./obj clojure.lang.Compile solution Compiling solution to ./obj % Perhaps you should try verifying that you added the type hints correctly, saved the source file, recompiled the one you wanted to in CCW Eclipse, etc. Andy On Feb 4, 2013, at 9:10 AM, Kanwei Li wrote: Hey Andy, Thanks for offering to help. Here's a gist: https://gist.github.com/4696105 As you can see at the bottom, I want the main method to read/write to STDIN/STDOUT, but for testing, I want to read from files instead. This is what I get in both CCW Eclipse and nrepl: Reflection warning, NO_SOURCE_PATH:4 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:11 - reference to field readLine can't be resolved. Reflection warning, NO_SOURCE_PATH:29 - reference to field newLine can't be resolved. Reflection warning, NO_SOURCE_PATH:20 - reference to field newLine can't be resolved. Thanks! On Sunday, February 3, 2013 4:38:38 PM UTC-5, Andy Fingerhut wrote: Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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. -- -- 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
Inflection on clojure.java.io/reader and writer
Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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: Inflection on clojure.java.io/reader and writer
Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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. -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- -- 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: Inflection on clojure.java.io/reader and writer
Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- Softaddictslprefo...@softaddicts.ca javascript: sent by ibisMail from my ipad! -- -- 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: Inflection on clojure.java.io/reader and writer
Can you post a larger chunk of code for us to examine, perhaps on github or as a gist if it is over 30 lines of code or so? Many of us have had good success with eliminating reflection using type hints, so it should be possible to make it work. Andy On Feb 3, 2013, at 12:50 PM, Kanwei Li wrote: Unfortunately it doesn't work. Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved. Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't be resolved. On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote: Why not add type hints like this ? (let [^java.io.BufferedReader in ^java.io.BufferedWriter out ...] .. Luc P. Hey guys, I'm trying to read a lot of data, sometimes from *in* and sometimes from a file. I extensively use the native .write and .read java methods. According to the clojure doc for reader, it says that Default implementations always return a BufferedReader. However, when I write, (*defn* solve [src dest] (*let* [in (clojure.java.io/reader src) out (clojure.java.io/writer dest) I get a bunch of reflection warnings on .read and .write, and most of the running time is spent on reflection. AFAIK you can't type hint a (let) construct, so what should I do here? Thanks! -- -- 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: Inflection on clojure.java.io/reader and writer
works for me:
= (*let [^java.io.BufferedReader a
(clojure.java.io/readerc:\\windows\\setupact.log)] (println (. a
readLine)))
*
AudMig: No audio endpoint migration settings found 0x2
nil
= *(let [a (clojure.java.io/reader c:\\windows\\setupact.log)] (println
(. a readLine)))*
Reflection warning, NO_SOURCE_PATH:1:72 - reference to field readLine can't
be resolved.
AudMig: No audio endpoint migration settings found 0x2
nil
= **clojure-version**
{:major 1, :minor 5, :incremental 0, :qualifier RC4}
On Sun, Feb 3, 2013 at 9:50 PM, Kanwei Li kan...@gmail.com wrote:
Unfortunately it doesn't work.
Reflection warning, NO_SOURCE_PATH:20 - call to write can't be resolved.
Reflection warning, NO_SOURCE_PATH:21 - reference to field newLine can't
be resolved.
On Sunday, February 3, 2013 2:35:23 PM UTC-5, Luc wrote:
Why not add type hints like this ?
(let [^java.io.BufferedReader in
^java.io.BufferedWriter out ...]
..
Luc P.
Hey guys,
I'm trying to read a lot of data, sometimes from *in* and sometimes
from a
file. I extensively use the native .write and .read java methods.
According to the clojure doc for reader, it says that Default
implementations always return a BufferedReader. However, when I write,
(*defn* solve [src dest]
(*let* [in (clojure.java.io/reader src)
out (clojure.java.io/writer dest)
I get a bunch of reflection warnings on .read and .write, and most of
the
running time is spent on reflection. AFAIK you can't type hint a (let)
construct, so what should I do here?
Thanks!
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