Re: [Haskell-cafe] What features should an (fictitious) IDE for Haskell have?

That's an `iterate (+1)` from me! I've just finished teaching my students about monads, and this facility would be really, really, useful.... (They're now engaged in a struggle with a monadic exercise ;-) Regards, Andrew

On 7 Dec 2020, at 23:22, André Popovitch wrote:

One feature I've always wanted would be able to "manually inline" a function. For example, if I have

foo a = a + a bar = foo 3

I'd like to be able to right-click on the invocation of `foo` and select some option to inline it, rewriting the file to read

foo a = a + a bar = 3 + 3

I think this would make it simple to dive into an abstraction to see what's really going on. For example, imagine a new user is confused by this expression:

Just 3 >> Just 4

They could right-click on `>>` to see that it is identical to:

case Just 3 of Just _ -> Just 4 Nothing -> Nothing

Which would allow them to easily see that this expression will always evaluate to "Just 4" (and hopefully simplify it). Enlightened, they could then hit ctrl-z to revert the code to its original state.

Haskell's purity and laziness makes it one of the only mainstream languages where equational reasoning is really possible, so this feature would play on Haskell's strengths and provide a feature that couldn't be replicated in other languages' IDEs. It would also allow new users to more easily dive in and understand certain abstractions (although how it would work in many cases would be hard to determine).

On Mon, Nov 30, 2020 at 3:35 PM Gueven Bay via Haskell-Cafe mailto:haskell-cafe@haskell.org> wrote: Greetings,

Imagine that you can decide what functionality and features an Integrated Development Environment for Haskell should get. You can make this IDE with your wishlist similar in power as other IDEs for Java for example.

Now list as many features as you can, what would make the life of a Haskell developer as comfortable as possible!?

I am dying to know how this list of features at the end (of this thread) will look like. _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.

-- Andre Popovitch 989 627 4376 _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.

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