From: Lawrence Bottorff <firstname.lastname@example.org> To: emacs-orgmode Mailinglist <email@example.com> Subject: Unhealthy Haskell babel Date: Wed, 9 Dec 2020 21:20:42 -0600 [thread overview] Message-ID: <CAFAhFSX1GCEQAAv1eE88MmN7dpRoXtR=xAPAGLqBytZHEm90kw@mail.gmail.com> (raw) [-- Attachment #1: Type: text/plain, Size: 1573 bytes --] I'm looking into Haskell (latest ghci) again on org-mode. This #+begin_src haskell :results verbatim :exports both :set +m doubleSmallNumber x = if x > 100 then x else x*2 #+end_src works, but still the :set +m is necessary for it to see the whole. But this #+begin_src haskell :results verbatim :exports both :set +m factorial :: Int -> Int factorial 0 = 1 factorial n = n * factorial (n - 1) #+end_src results in this on the REPL side: Prelude> :set +m factorial :: Int -> Int factorial 0 = 1 factorial n = n * factorial (n - 1) "org-babel-haskell-eoe" Prelude> <interactive>:26:1-23: error: • No instance for (Show (Int -> Int)) arising from a use of ‘print’ (maybe you haven't applied a function to enough arguments?) • In a stmt of an interactive GHCi command: print it Prelude> Prelude> Prelude> "org-babel-haskell-eoe" which is the same behavior if I try to feed the program into the REPL one line at a time, i.e., Prelude> factorial :: Int -> Int <interactive>:40:1-23: error: • No instance for (Show (Int -> Int)) arising from a use of ‘print’ (maybe you haven't applied a function to enough arguments?) • In a stmt of an interactive GHCi command: print it So the :set +m trick (take multiple lines) doesn't help here. Obviously, Haskell is not ready to be used with Babel. Can it be fixed? BTW, this does work with the regular ghci REPL and haskell-mode. If it helps, Standard ML, which has very similar syntax (it was Haskell's parent), works fine. LB [-- Attachment #2: Type: text/html, Size: 1964 bytes --]
next reply other threads:[~2020-12-10 3:21 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-10 3:20 Lawrence Bottorff [this message] 2020-12-10 10:27 ` Immanuel Litzroth 2020-12-10 17:21 ` Lawrence Bottorff 2020-12-10 18:40 ` Immanuel Litzroth 2020-12-10 20:26 ` Lawrence Bottorff 2020-12-14 20:45 ` Bastien
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