Re: Calling an overloaded Scala function
Sorry about the double threads - I messed up and thought the original post didn't go through. Looking further into this it seems in Java generics are largely a compile time thing. The generic type information is wiped out from the type on compile. So how does Java know which overload to call when the only difference in the generic type of the parameter? The answer is - it doesn't. I whipped up a quick bit of Java to test this : public static String Onk(ArrayListString str) { System.out.println(string); return ; } public static int Onk(ArrayListInteger it) { System.out.println(int); return 0; } This fails to compile : Error:(11, 24) java: name clash: Onk(java.util.ArrayListjava.lang.Integer) and Onk(java.util.ArrayListjava.lang.String) have the same erasure This sort of thing doesn't seem to be a problem for Scala, so it must be doing something funky under the hood to resolve these methods. Now, I can get the generic information about these methods using reflection : (- Dist$/MODULE$ type .getMethods vec (map #(.getGenericParameterTypes %)) pprint) gives me : ([#ParameterizedTypeImpl scala.collection.Seqscala.Tuple2java.lang.Object, com.cra.figaro.language.ElementT, #ParameterizedTypeImpl com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection] [#ParameterizedTypeImpl scala.collection.Seqscala.Tuple2com.cra.figaro.language.Elementjava.lang.Object, com.cra.figaro.language.ElementT, #ParameterizedTypeImpl com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection] So in theory I think I should be able to hack something together to resolve to the correct method. It won't be fast - or elegant, but hopefully it can work. Thanks On Fri, Jun 26, 2015 at 3:38 AM Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: That was meant as a response to the other thread. On Fri, Jun 26, 2015 at 10:35 AM, Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: They apparently differ in the return type. I don't think clojure.lang.Reflector considers the return type hint when resolving methods. Thanks, Ambrose On Fri, Jun 26, 2015 at 4:16 AM, Stephen Wakely fungus.humun...@gmail.com wrote: javap gives : public T com.cra.figaro.language.AtomicDistT apply(scala.collection.Seqscala.Tuple2java.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); public T com.cra.figaro.language.CompoundDistT apply(scala.collection.Seqscala.Tuple2com.cra.figaro.language.Elementjava.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); Bit of an eyesore, but the two methods only differ in the generic types.. On Thu, Jun 25, 2015 at 9:11 PM Stephen Wakely fungus.humun...@gmail.com wrote: So using reflection on the objects gives the following signatures - they have identical signatures : {:name apply, :return-type com.cra.figaro.language.CompoundDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} {:name apply, :return-type com.cra.figaro.language.AtomicDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} On Thu, Jun 25, 2015 at 9:05 PM Stuart Sierra the.stuart.sie...@gmail.com wrote: Scala has to compile down to JVM bytecode just like Clojure, but it may change method signatures along the way. You could try running `javap` to disassemble the compiled Scala bytecode and figure out what the method signatures actually are. Or use Java reflection to examine the objects you have and see what methods they declare. –S On Tuesday, June 23, 2015 at 10:51:55 AM UTC-4, Stephen Wakely wrote: I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element
Re: Calling an overloaded Scala function
I want to fully understand what is going on before doing anything. Interestingly if I convert the Java code below to Scala it fails to compile with the same error : def Onk(str: util.ArrayList[String]): String = { println(String) erk } def Onk(it: util.ArrayList[Integer]): Integer = { println(Int) 0 } But changing it to using (I think) more idiomatic Scala compiles and runs fine. def Onk(str: (String)*): String = { println(String) erk } def Onk(it: (Integer)*): Integer = { println(Int) 0 } On Fri, Jun 26, 2015 at 12:27 PM Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: Have you considered writing a wrapper method in Scala and calling that? Thanks, Ambrose On Fri, Jun 26, 2015 at 7:24 PM, Stephen Wakely fungus.humun...@gmail.com wrote: Sorry about the double threads - I messed up and thought the original post didn't go through. Looking further into this it seems in Java generics are largely a compile time thing. The generic type information is wiped out from the type on compile. So how does Java know which overload to call when the only difference in the generic type of the parameter? The answer is - it doesn't. I whipped up a quick bit of Java to test this : public static String Onk(ArrayListString str) { System.out.println(string); return ; } public static int Onk(ArrayListInteger it) { System.out.println(int); return 0; } This fails to compile : Error:(11, 24) java: name clash: Onk(java.util.ArrayListjava.lang.Integer) and Onk(java.util.ArrayListjava.lang.String) have the same erasure This sort of thing doesn't seem to be a problem for Scala, so it must be doing something funky under the hood to resolve these methods. Now, I can get the generic information about these methods using reflection : (- Dist$/MODULE$ type .getMethods vec (map #(.getGenericParameterTypes %)) pprint) gives me : ([#ParameterizedTypeImpl scala.collection.Seqscala.Tuple2java.lang.Object, com.cra.figaro.language.ElementT, #ParameterizedTypeImpl com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection] [#ParameterizedTypeImpl scala.collection.Seqscala.Tuple2com.cra.figaro.language.Elementjava.lang.Object, com.cra.figaro.language.ElementT, #ParameterizedTypeImpl com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection] So in theory I think I should be able to hack something together to resolve to the correct method. It won't be fast - or elegant, but hopefully it can work. Thanks On Fri, Jun 26, 2015 at 3:38 AM Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: That was meant as a response to the other thread. On Fri, Jun 26, 2015 at 10:35 AM, Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: They apparently differ in the return type. I don't think clojure.lang.Reflector considers the return type hint when resolving methods. Thanks, Ambrose On Fri, Jun 26, 2015 at 4:16 AM, Stephen Wakely fungus.humun...@gmail.com wrote: javap gives : public T com.cra.figaro.language.AtomicDistT apply(scala.collection.Seqscala.Tuple2java.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); public T com.cra.figaro.language.CompoundDistT apply(scala.collection.Seqscala.Tuple2com.cra.figaro.language.Elementjava.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); Bit of an eyesore, but the two methods only differ in the generic types.. On Thu, Jun 25, 2015 at 9:11 PM Stephen Wakely fungus.humun...@gmail.com wrote: So using reflection on the objects gives the following signatures - they have identical signatures : {:name apply, :return-type com.cra.figaro.language.CompoundDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} {:name apply, :return-type com.cra.figaro.language.AtomicDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} On Thu, Jun 25, 2015 at 9:05 PM Stuart Sierra the.stuart.sie...@gmail.com wrote: Scala has to compile down to JVM bytecode just like Clojure, but it may change method signatures along the way. You could try running `javap` to disassemble the compiled Scala bytecode and figure out what the method signatures actually are. Or use Java reflection to examine the objects you have and see what methods they declare. –S On Tuesday, June 23, 2015 at 10:51:55 AM UTC-4, Stephen Wakely wrote: I am trying to call into some Scala that has
Re: Calling an overloaded Scala function
Interesting. That could be a good last resort. On Thu, Jun 25, 2015 at 1:27 PM Andy Fingerhut andy.finger...@gmail.com wrote: Sorry, I do not know whether Clojure can or cannot determine the correct overload in this situation. All I have is a weak suggestion that work well enough: have you considered creating wrapper functions, e.g. in Scala or Java, that have different enough function signatures that Clojure can easily determine the correct one? Andy On Thu, Jun 25, 2015 at 1:54 AM, Stephen Wakely fungus.humun...@gmail.com wrote: I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout. -- 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/d/optout. -- 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/d/optout.
Re: Calling an overloaded Scala function
So using reflection on the objects gives the following signatures - they have identical signatures : {:name apply, :return-type com.cra.figaro.language.CompoundDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} {:name apply, :return-type com.cra.figaro.language.AtomicDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} On Thu, Jun 25, 2015 at 9:05 PM Stuart Sierra the.stuart.sie...@gmail.com wrote: Scala has to compile down to JVM bytecode just like Clojure, but it may change method signatures along the way. You could try running `javap` to disassemble the compiled Scala bytecode and figure out what the method signatures actually are. Or use Java reflection to examine the objects you have and see what methods they declare. –S On Tuesday, June 23, 2015 at 10:51:55 AM UTC-4, Stephen Wakely wrote: I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout. -- 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/d/optout.
Re: Calling an overloaded Scala function
javap gives : public T com.cra.figaro.language.AtomicDistT apply(scala.collection.Seqscala.Tuple2java.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); public T com.cra.figaro.language.CompoundDistT apply(scala.collection.Seqscala.Tuple2com.cra.figaro.language.Elementjava.lang.Object, com.cra.figaro.language.ElementT, com.cra.figaro.language.NameT, com.cra.figaro.language.ElementCollection); Bit of an eyesore, but the two methods only differ in the generic types.. On Thu, Jun 25, 2015 at 9:11 PM Stephen Wakely fungus.humun...@gmail.com wrote: So using reflection on the objects gives the following signatures - they have identical signatures : {:name apply, :return-type com.cra.figaro.language.CompoundDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} {:name apply, :return-type com.cra.figaro.language.AtomicDist, :declaring-class com.cra.figaro.language.Dist$, :parameter-types [scala.collection.Seq com.cra.figaro.language.Name com.cra.figaro.language.ElementCollection], :exception-types [], :flags #{:public}} On Thu, Jun 25, 2015 at 9:05 PM Stuart Sierra the.stuart.sie...@gmail.com wrote: Scala has to compile down to JVM bytecode just like Clojure, but it may change method signatures along the way. You could try running `javap` to disassemble the compiled Scala bytecode and figure out what the method signatures actually are. Or use Java reflection to examine the objects you have and see what methods they declare. –S On Tuesday, June 23, 2015 at 10:51:55 AM UTC-4, Stephen Wakely wrote: I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout. -- 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/d/optout.
Re: Calling an overloaded Scala function
I am sadly quite clueless when it comes to Java. De-compiling the Scala class file to Java gives me the following: public T AtomicDistT apply(SeqTuple2Object, ElementT clauses, NameT name, ElementCollection collection) { return new AtomicDist(name, clauses.toList(), collection); } public T CompoundDistT apply(SeqTuple2ElementObject, ElementT clauses, NameT name, ElementCollection collection) { return new CompoundDist(name, clauses.toList(), collection); } Generics all over the place. Would this even be callable from Java 1.4? On Thu, Jun 25, 2015 at 2:13 PM Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: Do you know how to call this method from Java 1.4? That will probably give enough context to use in Clojure type hints. Thanks, Ambrose On Thu, Jun 25, 2015 at 9:03 PM, Stephen Wakely fungus.humun...@gmail.com wrote: Interesting. That could be a good last resort. On Thu, Jun 25, 2015 at 1:27 PM Andy Fingerhut andy.finger...@gmail.com wrote: Sorry, I do not know whether Clojure can or cannot determine the correct overload in this situation. All I have is a weak suggestion that work well enough: have you considered creating wrapper functions, e.g. in Scala or Java, that have different enough function signatures that Clojure can easily determine the correct one? Andy On Thu, Jun 25, 2015 at 1:54 AM, Stephen Wakely fungus.humun...@gmail.com wrote: I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout. -- 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/d/optout. -- 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/d/optout. -- 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
Calling an overloaded Scala function
I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout.
Calling an overloaded Scala function
I am trying to call into some Scala that has the following overloaded methods : def apply[T](clauses: (Double, Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new AtomicDist(name, clauses.toList, collection) def apply[T](clauses: (Element[Double], Element[T])*)(implicit name: Name[T], collection: ElementCollection) = new CompoundDist(name, clauses.toList, collection) So one method takes a list of tuples of Double to Element and the other method takes a list of tuples of Element to Element. I am using t6.from-scala (https://github.com/t6/from-scala) to build up my list of Tuples. But when building these up there is no way to specify explicit type information about the collections. Consequently when calling this apply method Clojure will always choose to call the first method - even when my list is a collection of Element to Element tuples. I can definitely appreciate how it is going to be tricky for Clojure to determine the correct overload to use here. Is there any way I can somehow force it to call the correct overload myself? Thanks Stephen -- 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/d/optout.
Re: Newbie re-implement 'interleave' found type conversion error
Instead of : (if (s1) You just want : (if s1 s1 is a Long, not a function. On Thu, Apr 2, 2015 at 8:56 AM michael zhuang zhuangdeyouxi...@gmail.com wrote: : i'm new to clojure, when I try to implementation 'interleave', get error from type convertion java.lang。Long cannot be cast to clojure.lang.IFN. ; Now im reading stack trace, try to figure out what's going on.. (defn myIL [col1 col2] (loop [m [] s1 (first col1) s2 (first col2)] (if (s1) m (recur (conj (conj m s1) s2) (first (next col1)) (first (next col2))) ))) (myIL [1 3] [2 4]) Any helps ? -- 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/d/optout. -- 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/d/optout.
Re: Any Lispers in South Devon, UK?
Superb! I will make sure I am there. Looking forward to it! On Wed, Mar 11, 2015 at 9:56 PM Bruce Durling b...@otfrom.com wrote: w00t! On Wed, Mar 11, 2015 at 9:42 PM, John Kane j...@kanej.me wrote: Hello Stephen, Sorry for the late reply but we have been trying to get organised. The inaugural meeting of Exeter Clojurians will be: 7pm Wednesday 25th March 2015 City Gate Hotel, Iron Bridge, EX4 3RB Hope to see you there, and anyone else who is interested! John -- 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/d/optout. -- 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/d/optout. -- 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/d/optout.
Re: Any Lispers in South Devon, UK?
Awesome! I work in the middle of Exeter so that's definitely close enough. I would love to get involved. Do you guys have anything planned for a meet up? On 4 Mar 2015 19:13, John Kane j...@kanej.me wrote: Hello Stephen, There is a small group of us based around Exeter and we are trying to get a group off the ground, is that close enough to be of interest? John On Tuesday, 3 March 2015 21:53:57 UTC, Stephen Wakely wrote: Hi, Are there any other Lispers in South Devon who would be interested in meeting up and talking code? Clojure, Common Lisp, Scheme, anything as long as there are loads of parentheses! Please get in touch. Cheers Stephen -- 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/d/optout. -- 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/d/optout.
Any Lispers in South Devon, UK?
Hi, Are there any other Lispers in South Devon who would be interested in meeting up and talking code? Clojure, Common Lisp, Scheme, anything as long as there are loads of parentheses! Please get in touch. Cheers Stephen -- 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/d/optout.
Re: Persistent Data Structures for Objective-C/LLVM
Interesting. I would definitely look into this if I ever need to do another iOS app. How does it work in a language without garbage collection? If you replace an element in a vector and only keep a reference to the new vector there will be a stray element there that would need mopping up. Is ARC clever enough to recognise this? I wouldn't have thought so unless you maintain a reference count for every element within the vector.. Which I don't imagine would be particularly efficient. On Wed, 12 Nov 2014 3:48 PM Anton Astashov anton.astas...@gmail.com wrote: Sorry for resurrecting of such an old post, but I just wrote port of Clojure's data structures in Objective-C - https://github.com/astashov/persistent.objc - hopefully one day someone will find that useful. :) On Sunday, March 31, 2013 5:43:52 AM UTC-7, Matthias Benkard wrote: I implemented persistent, array-mapped Patricia trees in C a while ago: https://matthias.benkard.de/journal/118 It should be relatively straight-forward to build some Objective-C classes on top of that. (There's a reason the memory management routines are named bpt_{retain, release, dealloc}. :)) You'll just need to do the hashing yourself if you want to build a hash map. Matthias -- 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/d/optout. -- 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/d/optout.
Leiningen setup for modifying a library the project is depending on
I need to make some modifications to a library that my project is depending on. Currently Leiningen downloads the lib from clojure and uses that lib. Can I set things up so it uses the files I have cloned from github instead? I have searched the docs but can't find any ideas how to do this. Thanks Stephen -- 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/d/optout.