I am learning about Common Lisp and the Clack, following the tutorial:
http://clacklisp.org/tutorial/06-using-clack-app-directory.html
But in this chapter(Using Clack.App.Directory) I can't success, the SLIME prompts error: "There is no package named "CLACK.APP.DIRECTORY" "
But I followed all the steps in the tutorial, is there anything I missed? I am noob in lisp BTW.
The codebase changed much since version 1, and the tutorial is a little bit outdated. There is, however, a compatibility layer to that version.
(ql:quickload :clack-v1-compat)
Then, the appropriate packages are loaded and you should be able to continue the tutorial.
Related
I am trying to update an old racket package I had written ages ago to run on the new racket. I found the documentation extremely confusing and seemingly broke everything. Can you please suggest how things can be resolved?
While trying to run raco pkg install {path/to/package} I got an error saying my package was trying to find the old Racket 6.4 installation and since I have updated my operating system since then it didn't find it. I searched in that directory and could only find such references in the compiled/ folder. I skimmed the raco documentation and saw that raco setup --clean would remove that compiled folder. However, I thought it would be context specific: working on just the package who's directory I was in. That appears to not be the case. Now raco pkg doesn't even exist as a sub-command of raco!
How can I restore it and get back to trying to update my package so that it can be installed on the latest racket?
When you run raco, it works on the installation that it's a part of. So, for instance, if you have two copies of racket installed at /Users/clements/racket1/racket and /Users/clements/racket2/racket, then if I run the raco that's a part of the racket1 installation, I'll be updating the packages that are associated with the racket1 installation.
Sounds sensible, but I've messed this up myself, many times: depending on how your path is set up, the command raco may refer to either the racket1 or the racket2 installation. The problem here isn't really with racket, it's with the idea of paths, and how easy it is to mess things up when you have two installations containing the same binaries.
(And, of course, apologies if I'm misunderstanding your problem!)
I am looking for a complete instruction on how to setup Pony and make VS2017 or VSCode recognize its syntax, compile and debug program.
So far I've found a plugin for VS2015 (https://github.com/ponylang/VS-pony); however I cannot build the project (project is of course being converted to VS2017 format by VS2017 itself). I've also found some syntax colorizer for VSCode; however I have no clue how to configure building pipe, not mentioning the debugging environment.
Ps. On YouTube there is a lecture on Pony and guys there seem to use VSCode (https://www.youtube.com/watch?v=Vq1vRfv-A6g).
How did they do that? Does any one know?
Currently the plugin only supports syntax highlighting. I haven’t used it myself, but if you go to the Pony mailing list you might be able to find someone who has more information. I believe Sylvan is using Sublime Text in the video you linked to.
I started programming with Ocaml few days ago.
I use eclipse OcaIDE, ubuntu.
When I try to use the Core module in a code :
open Core.Std
...
I get an error:
Error: Unbound module Unix
I tried to create .ocamlinit file with adds:
#use "topfind";;
#thread;;
#camlp4o;;
#require "core.top";;
#require "core.syntax";;
The same error occurs in eclipse.
Сode without the use of the modules run fine.
Please, tell me, what I have to do?
Sorry for bad english.
Thank You for your answers!
OCaIDE is not wide-spread in OCaml community, so it is not well supported. Try to use emacs or vim. If you insist on using OCaIDE, then a good place to start is to view tutorials.
P.S. Even if you manage to configure OCaIDE it will be still much worse than Emacs+Merlin.
I'm trying to get EclipseFP (Haskell support, but the original coder stopped maintaining it last month) working on my iMac but everything seems to fail constantly. I've been debugging this for hours now and like most other Haskell stuff there isn't much decent support out there regarding the installation of such tools. I haven't even written a single line of Haskell code yet (apart from some playing around in GHC/GHCI which surprisingly did work)!
I've tried so many things already, different libraries, different solutions, different versions etc. But it seems that everything that has to do with haskell support is just one big clutter of confusion for me and nothing seems to point me in an apparent direction which bothers me since I am an experienced programmer and dealing with command line interfaces, tools and dependencies isn't unknown to me on all sort of platforms for years now.
Even the most relevant topics on StackOverflow or other knowledgebases just won't cut it regarding this topic and I'm starting to feel like dropping the entire Haskell language and just use something which does play nice with the system without such troubles since it is already such a pain in the ass to get the most basic development tools to work, let alone the coding itself...
The things I got:
Mac OSX Yosmite
GHC
GHCI
Cabal (repository)
Eclipse Luna
I've installed EclipseFP using the install instructions which worked out all great. At this point I thought it would just all work without any problems as the plugin installs just fine...
Well, that was not the case of course. I've restarted Eclipse as it requested after installing new plugins. Here is where the trouble begun..
In the following steps I would have to open the Haskell Perspective in Eclipse. Well... guess what.. there was none! After strolling the web I found out that it might have compatibility issues with the old JDK 1.6 which was installed by default on MacOSX. No worries.. I've downloaded Java JDK 1.8, set it up in Eclipse, restarted it. And there the item "Haskell perpective" showed up in the list.
After clicking that, and thinking my troubles were over (and I could finally start coding!) nothing happend! I've searched around for a while and found the Eclipse error console which until this day gives me nothing more than:
An error occurred while automatically activating bundle net.sf.eclipsefp.haskell.ui (459).
org.eclipse.e4.core.di.InjectionException: java.lang.RuntimeException: org.eclipse.core.runtime.CoreException: Plug-in net.sf.eclipsefp.haskell.ui was unable to load class net.sf.eclipsefp.haskell.ui.HaskellPerspective.
Of course I have tried solving this issue and came across some dependencies which needed to be installed using cabal (BuildWrapper, Scion-Browser and some other essentials). After doing so I still have the same problem and I have no idea where to look for. The only information I can really find are topics which are more than 3/4 years old which share 0 relevance to my exact problem.
I could paste the Java stacktrace here as well which came with the error message, but it doesn't show much useful information anyway other than just basic crashing.
I hope someone can help me because I would really like to start coding now for a change instead of wasting hours on getting my basic development framework/IDE set up.
Long story short; I'd like to code some Haskell in Eclipse but the development tools just won't install and/or work properly without any notable errors or directions to look for.
I have CounterClockwise for Eclipse and believe clojure.contrib should be installed. However, I can't seem to use it or any of the subfiles such as clojure.contrib.string. If I type as I get the following errors
If I type (require 'clojure-contrib.string) I get:
FileNotFoundException Could not locate clojure_contrib/string__init.class or clojure_contrib/string.clj on classpath: clojure.lang.RT.load (RT.java:443)
Long ago in an internet far far away Clojure had a large utility library called clojure.contrib which turned out to be rather hard to maintain, so it was broken up into many libraries, each of which uses the Clojure contributors agreement. In this process clojure.contrib.string became just clojure.string and the names of all the other projects changed and they are released independently now. Seeing references to clojure.contrib is a sign that you are looking at outdated documentation. Also watch out for tutorials that make references to installing Clojure or installing dependencies without leiningen.