Question

我一直在尝试使用Haskell来运行简单的生产流程。像许多生产过程一样，它涉及改变各地的事物状态。出于这个原因，我有一个脚本文件非常方便，我可以跟踪事物并有选择地将命令运行到交互式Haskell中，例如

if (!(operator.equals("*") || operator.equals("+") ...

如果您可以按下按钮将这些行发送到repl进程，那么如果像在R中使用ESS（Emacs说统计数据）那样真的很酷。也许是线条，段落，区域的单独按钮。有没有办法做到这一点？

例如，使用ESS，-- to start the process process <- startProcess -- to stop process stopProcess -- to check how things are going summary <- checkStuff summary -- optionally restart bad processes restartProcesses (getBadProcesses summary) -- send summary emails sendSummaryEmails summary ["abunch@ofemails.com", "thatIwould@rather.com", "nothaveto@keep.com" "typing@out.com", "orcopy@pasting.com"] -- set up something big that I don't want to have to retype/paste every time studentGrades <- getStudentGrades "John Peterson" gen <- getStdGen let (randomTest, gen') = generateRandomTest studentGrades gen compilePdf randomTest answers <- getAnswers gradeTest randomTest answers "John Peterson"发送一行，C-Ret发送一个段落，C-c C-c发送一个区域。

Answer 1

此emacs lisp函数将向haskell的repl发送命令

(defun haskell-send-command (cmd)
  (process-send-string (inferior-haskell-process) (concat cmd "\n")))

这将使用当前选择

调用前一个

(defun haskell-send-selection ()
  (interactive)
  (haskell-send-command (x-selection)))

您可以使用global-set-key为其指定键盘快捷键。然后，您需要弄清楚如何快速选择要发送的内容。例如M-h是mark-paragraph。或者只是重新编码您喜欢的ESS功能：

(defun haskell-send-paragraph ()
  (interactive)
  (mark-paragraph)
  (haskell-send-selection))

我实际上使用它们在emacs中为Haskell构建一个小的调试GUI。我有设置断点和步进的快捷方式，调试器的位置直接在haskell代码中突出显示。

Haskell / Intero - 将行发送到Intero REPL缓冲区

1 个答案: