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Text File | 1997-08-18 | 1.5 KB | 51 lines | [TEXT/R*ch] |
- Using Moscow ML under plain DOS
- -------------------------------
-
- If you use mosml under plain DOS, then you need an external editor
- such as DOS `edit' to edit your ML source files.
-
- Assume that the source file you want to edit is called "gcd.sml".
- Then you can invoke the editor from within the ML session by
- evaluating
-
- system "edit gcd.sml";
-
- When returning from the editor, you can load the source file by
- evaluating
-
- use "gcd.sml";
-
- This works, but is tedious. To simplify the calls to edit and use,
- use the following program in file mosml\lib\edit:
-
- (* ---------------------------------------------------------- *)
- local
- val file = ref ""
- fun setit "" = !file
- | setit s = (file := s; s)
- in
- fun e s = (system ("edit " ^ setit s); use (setit s))
- end
- (* ---------------------------------------------------------- *)
-
- You may invoke Moscow ML with
-
- mosml edit
-
- Then, inside the mosml session, you may evaluate
-
- e "gcd.sml";
-
- This will invoke the DOS editor `edit' on file "gcd.sml". When you
- are finished editing the file, save it, and exit the editor. Then the
- edited file will automatically be loaded into the current mosml
- session by `use'. (If you prefer to use e.g. the Turbo Pascal editor,
- then replace "edit " by "turbo " in function `e' above).
-
- The call to the `e' function saves the filename, so if you need to
- edit the same file "gcd.sml" again, you need to type only
-
- e "";
-
- This will edit (and then use) the file most recently edited.
-