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iPad Haskell Editor

slidetocode.com

45 pointsLukeHoersten14 comments

This looks great, and something I've been looking for for a while. One thing: I tried checking the type of a function with Hugs' ':type' command, and it crashed. Peering a types is pretty much all I do when hacking Haskell -- would it be possible to have support for it?

I love the vi command keyboard!

That crash slipped in at the last moment, have fixed it now. Yes, I am missing those commands as well, I will look into adding them.

I experienced this too, but overall this is a great app. Hope you continue development. If only Apple ToS would allow package management...

Also seems to crash randomly when importing standard libraries (like Data.Map) in a file I'm currently editing, making it somewhat unusable for the time being.

Another bug: one can rapidly tap the documentation boxes, launching multiple copies of the docs, each needing to be dismissed separately. Worse still, once the final copy is dismissed, the documentation launcher boxes are misplaced.

One can do this with the editors, too, and eventually one is lacking the "Done" link to dismiss the editor, forcing the user to kill Raskell and restart it.

Thank you for creating this, though!

edit: here's one more...open a file like Spices, then pless play, then close the file by pressing the greyed-out "Done". The play window will not be dismissed, but the file window will be.

I applaud the effort, especially the virtual keyboard with the actual meaning of vi commands, instead of HJKL.

The demo doesn't have a voiceover, but this project looks intriguing. I would love to read a side-by-side comparative review of Raskell and iHaskell (which I've used on someone else's iPad, and liked).

Does it compile code on the iPad or does it use some online API like the other Haskell programs on the Apple App Store?

It compiles to a virtual machine, then interprets on the iPad. No internet connection is required.

This is allowed by Apple because no code is loaded from the net right?

Yes, interpreters are ok, but they must not execute downloadable code (including email imports and iTunes sync)

I read somewhere that it's ook if it is javascript executed with jscore; know if that is true? That would give slightly more leeway.

I think so. It is hard to disallow that without crippling the OS.

What advantages does this have (other than the changing keyboard button icons) over running haskell in MobileTerminal with an actual vim/emacs/nano/whatever I want to use? Why should I pay $3 for this if I can do it for free already?

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