there's a handy trick for pulling in the standard repl aliases / refers: (cmd)user=> clojure.main/repl-requires [[clojure.repl :refer (source apropos dir pst doc find-doc)] [clojure.java.javadoc :refer (javadoc)] [clojure.pprint :refer (pp pprint)]] (ins)user=> (ns foo.bar) nil (ins)foo.bar=> (doc fn) Syntax error compiling at (REPL:1:1). Unable to resolve symbol: doc in this context (ins)foo.bar=> (apply require clojure.main/repl-requires) nil (cmd)foo.bar=> (doc fn) ------------------------- clojure.core/fn (fn name? [params*] exprs*) (fn name? ([params*] exprs*) +) ([& sigs]) Special Form ...
On Thu, Apr 29, 2021 at 10:41 PM Sean Corfield <s...@corfield.org> wrote: > Sorry, it's clojure.repl/demunge so it depends on how you run your REPL > and evaluate code -- in my case, clojure.repl symbols were all referred in. > In your case, you'll need to require clojure.repl and refer it in: > > (require '[clojure.repl :refer [demunge]) > > or make that part of your ns form as: > > (:require [clojure.repl :refer [demunge]]) > > -- > Sean A Corfield -- (904) 302-SEAN > An Architect's View -- https://corfield.org/ > World Singles Networks, LLC. -- https://worldsinglesnetworks.com/ > > "Perfection is the enemy of the good." > -- Gustave Flaubert, French realist novelist (1821-1880) > > On Thu, Apr 29, 2021 at 10:27 PM damon kwok <qq563066...@gmail.com> wrote: > >> >> Clojure 1.10.1 >> (defn haha [] >> (println (demunge (.getName (.getCallerClass >> (java.lang.StackWalker/getInstance >> java.lang.StackWalker$Option/RETAIN_CLASS_REFERENCE)))))) >> Syntax error compiling at (REPL:1:23). >> Unable to resolve symbol: demunge in this context >> 在2021年4月30日星期五 UTC+8 上午4:35:45<Sean Corfield> 写道： >> >>> That's definitely nicer: >>> >>> dev=> (*defn* *add* [a b] >>> >>> #_=> (*println* (demunge (*.getName* (*.getCallerClass* ( >>> *java.lang.StackWalker*/getInstance *java.lang.StackWalker$Option* >>> /RETAIN_CLASS_REFERENCE))))) >>> >>> #_=> (*+* a b)) >>> >>> #'dev/add >>> >>> dev=> (add 1 2) >>> >>> dev/add >>> >>> 3 >>> >>> dev=> >>> >>> Thanks, Rémi! >>> >>> On Thu, Apr 29, 2021 at 12:08 PM Remi Forax <fo...@univ-mlv.fr> wrote: >>> >>>> >>>> >>>> ------------------------------ >>>> >>>> *De: *"Sean Corfield" <se...@corfield.org> >>>> *À: *"clojure" <clo...@googlegroups.com> >>>> *Envoyé: *Jeudi 29 Avril 2021 01:26:34 >>>> *Objet: *Re: How get function name in body? >>>> >>>> Consider that: >>>> >>>> (defn add [a b] (+ a b)) >>>> >>>> is expanded to (something like): >>>> >>>> (def add (fn [a b] (+ a b))) >>>> >>>> So the actual code that runs is an anonymous function, which is bound >>>> to the (global) var #'add -- the function itself has no name. >>>> >>>> dev=> (*macroexpand* '(*defn**add* [a b] (*+* a b))) >>>> >>>> (def add (clojure.core/fn ([a b] (+ a b)))) >>>> >>>> dev=> (*defn**add* [a b] (*+* a b)) >>>> >>>> #'dev/add >>>> >>>> dev=> add >>>> >>>> #object[dev$add 0x72f91c91 "dev$add@72f91c91"] >>>> >>>> So the value of add is an object, with type dev$add, a class that >>>> implements a bunch of things including clojure.lang.IFn and >>>> java.lang.Runnable and java.util.concurrent.Callable etc. >>>> >>>> The "name" of function is hard to get to, inside a function because of >>>> that. >>>> >>>> One way to figure that out at runtime is to dig into the stack, which >>>> you can get at by creating an exception and inspecting it: be aware that >>>> this is an expensive operation! >>>> >>>> dev=> (*defn**add* [a b] >>>> >>>> #_=> (*let* [frame (*first* (*:trace* (*Throwable->map* (*ex-info**""* >>>> {}))))] >>>> >>>> #_=> (*println* (demunge (*name* (*first* frame)))) >>>> >>>> #_=> (*+* a b))) >>>> >>>> #'dev/add >>>> >>>> dev=> (add 1 2) >>>> >>>> dev/add >>>> >>>> 3 >>>> >>>> dev=> >>>> >>>> demunge is what turns Clojure's generated classnames back into readable >>>> source names. >>>> >>>> >>>> Instead of using the stacktrace of java.lang.Throwable, you can use >>>> StackWalker.getCallerClass() if you are using a jdk 9+ >>>> >>>> >>>> The more important question is: why do you want the function's name >>>> inside the body? >>>> -- >>>> Sean A Corfield -- (904) 302-SEAN >>>> An Architect's View -- https://corfield.org/ >>>> World Singles Networks, LLC. -- https://worldsinglesnetworks.com/ >>>> >>>> "Perfection is the enemy of the good." >>>> -- Gustave Flaubert, French realist novelist (1821-1880) >>>> >>>> >>>> Rémi >>>> >>>> [1] >>>> https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/StackWalker.html#getCallerClass() >>>> >>>> -- >>>> 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 >>>> 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. >>>> >>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/clojure/843762456.638578.1619723272421.JavaMail.zimbra%40u-pem.fr >>>> <https://groups.google.com/d/msgid/clojure/843762456.638578.1619723272421.JavaMail.zimbra%40u-pem.fr?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >>> >>> -- >>> Sean A Corfield -- (904) 302-SEAN >>> An Architect's View -- https://corfield.org/ >>> World Singles Networks, LLC. -- https://worldsinglesnetworks.com/ >>> >>> "Perfection is the enemy of the good." >>> -- Gustave Flaubert, French realist novelist (1821-1880) >>> >> -- >> 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. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/clojure/a3a4a5a8-18e8-4a07-b457-6ed58a75a800n%40googlegroups.com >> <https://groups.google.com/d/msgid/clojure/a3a4a5a8-18e8-4a07-b457-6ed58a75a800n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/clojure/CAD4thx_tnaZa5YTdojUojqEQ2ZH4_L478O9iN24MPwhxiMwVLg%40mail.gmail.com > <https://groups.google.com/d/msgid/clojure/CAD4thx_tnaZa5YTdojUojqEQ2ZH4_L478O9iN24MPwhxiMwVLg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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