Intero for Emacs
“I just tried this and it works. It just works. I have never had this experience with Haskell + Emacs. Thank you so much for this.” Install package Use Emacs's built in package manager. Add the following to your .emacs: ;; If you don't have MELPA in your package archives: (require 'package) (add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/") t) (package-initialize) (package-re
Reloading running code in GHCi
Something I’ve been using over the past couple weeks in a personal Yesod web site is a way to reload the code while the server is still running in GHCi. I saw in Greg Weber’s blog post about a “reload mode” for web servers and thought I’d share my approach. GHCi already supports reloading of code, it just doesn’t know it. The problem with doing this in GHCi is always that the :load and :reload com
Stack traces in GHCi, coming in GHC 8.0.1 · Simon Marlow
Simon Marlow Software Engineer at Facebook in London Co-developer of the Glasgow Haskell Compiler Twitter: @simonmar Github: simonmar Email: marlowsd@gmail.com LinkedIn: Simon Marlow Stack traces in GHCi, coming in GHC 8.0.1 February 12, 2016 tl;dr In the upcoming GHC 8.0.1 release, if you start GHCi with ghci -fexternal-interpreter -prof (any packages you use must be built for profiling), then yo
Dynamically link against library in GHCi - School of Haskell | School of Haskell
Interactive code snippets not yet available for SoH 2.0, see our Status of of School of Haskell 2.0 blog post This post reviews a small feature of GHCi version 7.10 in order to promote it: 1.5.2.3. GHCi It's now possible to use :set -l{foo} in GHCi to link against a foreign library after startup.Before 7.10Before 7.10 library flags had to be passed as command-line arguments to ghci. If we wanted t
The Glorious Glasgow Haskell Compilation System User's Guide, (Latest)
Welcome to the GHC User’s Guide View page source Welcome to the GHC User’s Guide¶ Contents: 1. Introduction 1.1. Obtaining GHC 1.2. Meta-information: Web sites, mailing lists, etc. 1.3. Reporting bugs in GHC 1.4. GHC version numbering policy 1.5. The Glasgow Haskell Compiler License 2. Release notes 2.1. Version 9.10.1 2.1.1. Language 2.1.2. Compiler 2.1.3. JavaScript backend 2.1.4. WebAssembly ba
GHCi in colour - HaskellWiki
Prompt only The prompt can be colored by altering GHCi's prompt setting including ANSI terminal color codes. For example :set prompt "\ESC[34m\STX%s > \ESC[m\STX" will give the prompt blue color: As usual, adding this to ghci.conf will auto-execute the command when running GHCi, making the prompt colored by default. Remember to use \STX to end an escape sequence. Without this control character, th
The ghc-vis User Guide
ghc-vis is a tool to visualize live Haskell data structures in GHCi. Evaluation is not forced and you can interact with the visualized data structures. This allows seeing Haskell’s lazy evaluation and sharing in action. Functional programming languages like Haskell offer a way to write well-structured software, which is easy to understand and still performs well. In order to achieve this one has t
ghc-vis
Visualize live data structures in GHCi. Evaluation is not forced and you can interact with the visualized data structures. This allows seeing Haskell's lazy evaluation and sharing in action. See https://dennis.felsing.org/ghc-vis/#basic-usage for the basic usage of ghc-vis or watch a short video demonstrating how it can be used with GHCi's debugger: https://dennis.felsing.org/ghc-vis/#combined-deb
GHCi debugger を使ってみた - khibino blog
Haskell Advent Calendar 2011 のためのエントリです。 最近、会社でも Haskell を開発のメンバーで使っていくことに正式に決まりました。 Haskell のプログラムをデバッグするときにデバッガーのようなツールを使うことが できるのか社内で質問されたので調べてみました。 GHCi debugger 公式のドキュメント http://www.haskell.org/ghc/docs/7.0.4/html/users_guide/ghci-debugger.html や その翻訳 http://www.kotha.net/ghcguide_ja/7.0.4/ghci-debugger.htmlを 参考にしながら試してみて、私なりに理解した内容を紹介しようと思います。 mkothaさん、すばらしい翻訳をありがとうございます。 さっそく、GHCi debugger
m3ga blog
Sat, 18 Oct 2014 Haskell : A neat trick for GHCi Just found a really nice little hack that makes working in the GHC interactive REPL a little easier and more convenient. First of all, I added the following line to my ~/.ghci file. :set -DGHC_INTERACTIVE All that line does is define a GHC_INTERACTIVE pre-processor symbol. Then in a file that I want to load into the REPL, I need to add this to the t
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`stack ghci` fails · Issue #4464 · jgm/pandoc · GitHub
How can you use a custom prelude with ghci? : haskell
4. Release notes for version 8.6.1 — Glasgow Haskell Compiler 8.6.1 User's Guide
GHC/As a library - HaskellWiki
ghc/InteractiveUI.hs at master · ghc/ghc · GitHub
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GitHub - chrisdone-archive/intero
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GitHub - sol/doctest: An implementation of Python's doctest for Haskell