Can your REPL do this? • Hacker News Board

Re: Can your REPL do this?

#31

Post by weavejester » Wed, Dec 07, 2011, 11:03 PM UTC

cemerick wrote: post #22

weavejester wrote: post #6

Factor's REPL can handle images, colours and fonts: http://re-factor.blogspot.com/2010/09/visual-repl.html I've been meaning to write something like Factor's REPL for Clojure, but haven't gotten around to it yet.

Working on it: http://cemerick.com/2011/10/26/enabling-richer-interactions-... In a heterogeneous mix of tools, getting the channel right is a big part of the challenge. Lots of the interactivity is going to be client-specific (i.e. what's possible / attractive in Eclipse is different from Emacs/vim/TextMate), but the channel underneath is a big enabler. Would love to hear what you have in mind specifically, if only…

I was thinking of using a browser, as you'd get images, tables and so forth for free. The Ace code editor could be used for the prompt, which would provide syntax highlighting and indent rules for the prompt.

Re: Can your REPL do this?

#32

Post by saraid216 » Wed, Dec 07, 2011, 11:37 PM UTC

mtraven wrote: post #12

Still waiting for a REPL that could what Lisp Machines could do in the early 80s -- namely integrate graphics with object-specific behavior. http://dspace.mit.edu/handle/1721.1/6946 http://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager http://www.sts.tu-harburg.de/~r.f.moeller/uims-clim/clim-int...

Why waiting?

Re: Can your REPL do this?

#33

Post by smashing » Thu, Dec 08, 2011, 1:03 AM UTC

ruediger wrote: post #24

mtraven wrote: post #12

Still waiting for a REPL that could what Lisp Machines could do in the early 80s -- namely integrate graphics with object-specific behavior. http://dspace.mit.edu/handle/1721.1/6946 http://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager http://www.sts.tu-harburg.de/~r.f.moeller/uims-clim/clim-int...

I wish Emacs would provide a canvas like API to draw in buffers. That way integrated graphics could be easily added. This would create a completely new Emacs experience.

There is an Artist Mode for Emacs. The "pictures" are ASCII-esque ;) http://www.cinsk.org/emacs/emacs-artist.html

Re: Can your REPL do this?

#34

Post by ruediger » Thu, Dec 08, 2011, 1:47 AM UTC

smashing wrote: post #33

ruediger wrote: post #24

Earlier quoted context omitted.

I wish Emacs would provide a canvas like API to draw in buffers. That way integrated graphics could be easily added. This would create a completely new Emacs experience.

There is an Artist Mode for Emacs. The "pictures" are ASCII-esque ;) http://www.cinsk.org/emacs/emacs-artist.html

I know. But for serious application a real drawing capability is needed. This should actually be possible to implement on top of the GTK+ layer.

Re: Can your REPL do this?

#35

Post by pnathan » Thu, Dec 08, 2011, 3:38 AM UTC

gruseom wrote: post #29

pnathan wrote: post #28

Earlier quoted context omitted.

Granted. To be 100% honest, I'm not sure why a programming language REPL needs to have full data visualization. I may not fully get the idea of REPLs, but it would seem to me that that would be the responsibility of a layer above it to manage data presentation; sophisticated data I would consider to require a domain-specific viewer anyway.

I agree with you there, so I guess what I want is a REPL that has hooks for custom printers, i.e to display an object of type X my way instead of the usual way. I'd like "printing" to optionally include graphics or whatever else makes for a good display of that data. And I'd like the representation to be interactive, so that one can drill down into sub-data or whatever else is appropriate. That too (obviously) is the…

I present to you print-object, a generic function in Common Lisp.

http://clhs.lisp.se/Body/f_pr_obj.htm

So say you have a object type FOO, you can do this:

    (defmethod print-object ((obj FOO) stream)
      ...)

Now, when you have a FOO on the repl, print-object will be called.

Obviously it doesn't provide a drilldown approach and any number of nifty and useful functions.

Re: Can your REPL do this?

#36

Post by adobriyan » Thu, Dec 08, 2011, 1:59 PM UTC

brutol wrote: post #27

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#x4DF0

Re: Can your REPL do this?

#37

Post by gcr » Sat, Dec 10, 2011, 7:46 PM UTC

DrRacket's REPL supports image literals. The racket language also includes functions for manipulating these. Take a look at this program: http://img13.imageshack.us/img13/6493/drracket.jpg

In the "Definitions" pane at the top, we define three variables, bruce-lee, energy-blast, and terrible-accident. In the "Interations" pane at the bottom (here's the REPL), we compose them together.