Re: group rows on basis of value in a column in CSV with clojure
Hi All, Thanks for the tip to use (group-by last …) It was working fine until my csv file got updated. Now i am not sure abt the number of columns in my csv. It could change in every row, but I still need to group it with Heading 3 itself. Example of my updated CSV is as below Heading1 Heading 2 Heading 3 Heading 4 Heading 5 > abc 123 Value1 newValue > def 234 Value1 anotherValue oneMoreValue > ghi dfgew Value1 aValue > jkl 456 Value5 > pqr 567 Value5 > stu 678 value3 > vwx sdf value4 > yza 900 value4 Now i cant use (group-by last ...) instead i tried using (nth On Tuesday, July 3, 2018 at 10:42:08 PM UTC+5:30, Philipp Neumann wrote: > > Hi. > > This is a job for (group-by last ...) > > Regards > > Varun J.P > schrieb am Di., 3. Juli > 2018, 19:05: > >> My CSV file is something like the attached file which could have 'n' >> number of line. I need to group by the values in the last column. >> Current I believe the below code will return me a vector of vector. >> >> (defn read-csv-file >> >> [path] >> >> (try >> >>(with-open [input-file (io/reader path)] >> >> (let [a_list (doall (map (comp first clojure-csv.core/parse-csv) ( >> line-seq input-file)))] >> >>(rest (into [] a_list >> >>(catch Exception exception (throw exception >> >> >> i need to iterate through this vector of vector and create a new vector >> of vector containing only elements of the first group, then in next >> iteration i need the second set and so on. >> >> Example CSV >> >>> Heading1 Heading 2 Heading 3 >>> abc 123 Value1 >>> def 234 Value1 >>> ghi dfgew Value1 >>> jkl 456 Value5 >>> pqr 567 Value5 >>> stu 678 value3 >>> vwx sdf value4 >>> yza 900 value4 >> >> >> >> so when this CSV is parsed i will have something like >> [ >> [abc 123 Value1] >> [def 234 Value1] >> [ghi dfgew Value1] >> [jkl 456 Value5] >> [pqr 567 Value5] >> [stu 678 value3] >> [vwx sdf value4] >> [yza 900 value4]] >> So when i iterate through this i need to group the vector of vector by >> the last column >> so my first iteration output should be something like >> >> [ >> [abc 123 Value1] >> [def 234 Value1] >> [ghi dfgew Value1]] >> 2nd iteration should be >> [ >> [jkl 456 Value5] >> [pqr 567 Value5]] >> 3rd should be >> >> [ >> [stu 678 value3]] >> and so on. >> >> How would i achieve this in clojure. is there any build in csv parsing >> function >> >> Regards >> JP >> >> >> >> -- >> 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 . >> 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: What is the minimal Emacs config for practical Clojure development?
I've determined that the previously mentioned errors are related to incompatibilities with inf-clojure and clojurescript. I filed a bug, and a workaround, with inf-clojure here: https://github.com/clojure-emacs/inf-clojure/issues/150 -- 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: What is the minimal Emacs config for practical Clojure development?
I shouldn't have said that two of those errors were the same. They're
different, but they both mention unquoted symbols.
Monroe
clojure.lang.ExceptionInfo: Arguments to require must be quoted. Offending
spec: (symbol (namespace (quote clojure.repl/pst))) at line 1
{:file "", :line 1, :column 5, :root-source-info {:source-type
:fragment, :source-form (do (require (symbol (namespace (quote
clojure.repl/pst (clojure.repl/pst *e))}, :tag :cljs/analysis-error}
inf-clojure
WARNING: Use of undeclared Var cljs.user/Throwable at line 6
clojure.lang.ExceptionInfo: Assert failed: Argument to resolve must be a
quoted symbol
(core/and (seq? quoted-sym) (= (quote quote) (first quoted-sym))) at line 4
{:file "", :line 4, :column 2, :root-source-info
{:source-type :fragment, :source-form (try (:arglists (clojure.core/meta
(clojure.core/resolve (clojure.core/read-string "ClojureScript" (catch
Throwable t nil))}, :tag :cljs/analysis-error}
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Re: What is the minimal Emacs config for practical Clojure development?
I tried this, changing node to browser, like so:
clojure -J-Dclojure.server.repl="{:port ${1:-} :accept
cljs.server.browser/repl}" -cljs-canary -m cljs.main -re browser -r
That starts a REPL in my terminal, but when I try to connect to it from
Emacs, using C-c M-c RET localhost RET , I get the following in my
Emacs *inf-clojure* buffer:
Process inf-clojure connection broken by remote peer
and the following the terminal REPL:
Exception in thread "Clojure Connection repl 1" java.lang.RuntimeException:
Unable to resolve symbol: PrintWriter-on in this context,
compiling:(cljs/core/server.clj:81:29)
On Friday, July 6, 2018 at 4:50:57 PM UTC-7, Andrea Richiardi wrote:
>
> Ok this command will open a socket REPL directly in cljs.user:
>
> clojure -J-Dclojure.server.repl="{:port ${1:-} :accept
> cljs.server.node/repl}" -R:cljs-canary -m cljs.main -re node -r
>
> You need the right deps.edn aliases - then you will be able to nc
> localhost or inf-clojure-connect to it.
>
> On Friday, July 6, 2018 at 11:18:56 AM UTC-7, Austin Haas wrote:
>>
>> I spent a couple more hours working with Monroe and Figwheel. I still
>> can't figure out how to use the REPL. After trying to evaluate a few
>> expressions, Emacs gets completely locked up spewing the following error
>> message 1000s of times:
>>
>> clojure.lang.ExceptionInfo: Arguments to require must be quoted.
>> Offending spec: (symbol (namespace (quote clojure.repl/pst))) at line 1
>> {:file "", :line 1, :column 5, :root-source-info
>> {:source-type :fragment, :source-form (do (require (symbol (namespace
>> (quote clojure.repl/pst (clojure.repl/pst *e))}, :tag
>> :cljs/analysis-error}
>>
>> I've switched back to inf-clojure and Figwheel with the following config:
>>
>> (add-to-list 'load-path "~/.emacs.d/site-lisp/third-party/inf-clojure/")
>> (require 'inf-clojure)
>> (setf inf-clojure-lein-cmd "lein run -m clojure.main")
>> (add-hook 'clojure-mode-hook #'inf-clojure-minor-mode)
>> (add-hook 'inf-clojure-mode-hook #'eldoc-mode)
>>
>> That seems to work, but I see something like this in the minibuffer every
>> time I move the cursor, with or without eldoc mode enabled:
>>
>> def: (:arglists^[[0m
>> ^[[36m3^[[0m ^[[36m(clojure.core/meta^[[0m
>> ^[[36m4^[[0m ^[[36m(clojure.core/resolve^[[0m
>> ^[[36m5^[[0m ^[[36m(clojure.core/read-string "def")
>>
>> Does "lein run -m clojure.main" create a socket REPL?
>>
>> I followed the instructions for inf-clojure for a "Clojure Command Line
>> Socket REPL" (
>> https://github.com/clojure-emacs/inf-clojure#clojure-command-line-socket-repl),
>>
>> but then (fig-start) is not found.
>>
>> I followed the instructions for inf-clojure for a "Leiningen Socket REPL"
>> (https://github.com/clojure-emacs/inf-clojure#leiningen-socket-repl),
>> and that produces results like with "lein run -m clojure.main"; it works,
>> but I get the "eldoc" garbage in the minibuffer. AFAICT, the eldoc problem
>> doesn't occur until I run (cljs-repl).
>>
>> Any insight greatly appreciated.
>>
>>
>>
>>
>>
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Re: What is the minimal Emacs config for practical Clojure development?
Yesterday, I followed the excellent "Clojurescript Quick Start Guide"
(https://clojurescript.org/guides/quick-start). Everything worked as
expected. They did a great job of making it as minimal as possible.
After that, I followed the "Emacs and Inferior Clojure Interaction Mode"
guide (https://clojurescript.org/tools/emacs-inf). That's a nice guide,
too. I had one issue: the instructions are out of date because inf-clojure
removed the run-clojure alias for the inf-clojure function. I submitted a
patch: https://github.com/clojure/clojurescript-site/pull/246
Currently, I'm running with Emacs, inf-clojure, and lein-cljsbuild. It
seems to be working well. I don't have live code reloading, like Figwheel.
This is the function I'm using in my .emacs to launch the repl:
(defun cljs-browser-repl ()
(interactive)
(inf-clojure "lein trampoline run -m clojure.main repl.clj"))
And the contents of repl.clj:
(require '[cljs.repl :as repl])
(require '[cljs.repl.browser :as browser]) ;; require the browser
implementation of IJavaScriptEnv
(def env (browser/repl-env :static-dir ["." "out/" "resources/public/"]))
;; create a new environment
(repl/repl env) ;; start the REPL
Today, for unknown reasons, I'm no longer getting the "def:
(:arglists^[[0m..." messages in my minibuffer, but instead I'm seeing two
different errors when I put the cursor in an expression:
WARNING: Use of undeclared Var cljs.user/Throwable at line 6
clojure.lang.ExceptionInfo: Assert failed: Argument to resolve must be a
quoted symbol
(core/and (seq? quoted-sym) (= (quote quote) (first quoted-sym))) at line 4
{:file "", :line 4, :column 2, :root-source-info
{:source-type :fragment, :source-form (try (:arglists (clojure.core/meta
(clojure.core/resolve (clojure.core/read-string "ClojureScript" (catch
Throwable t nil))}, :tag :cljs/analysis-error}
This usually pops up in the minibuffer as: defn: (core/and (seq?
quoted-sym)), but fortunately the full message went to the REPL once. Note
that this is the same error I was when using Monroe instead of inf-clojure.
The other message I see is:
ReferenceError: planck is not defined
()
which pops up in the minibuffer as: defn: ()
I also got this error once when trying to get the docstring for a var:
WARNING: No such namespace: lumo.repl, could not locate lumo/repl.cljs,
lumo/repl.cljc, or JavaScript source providing "lumo.repl" at line 1
WARNING: Use of undeclared Var lumo.repl/doc at line 1
WARNING: Can't take value of macro cljs.core/declare at line 1
ReferenceError: lumo is not defined
()
To my knowledge, I'm not using lumo or planck.
Andrea, do you still think these are issues with inf-clojure?
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