Thanks, but what do you think the learning curve will be on PureScript? How similar to Haskell is it? I want to balance some factors here. As my initial goal is rapid prototyping and experimentation, I'd like to use a language I already know well, in other words Haskell. But of course even with a familiar language, I'm going into a quite unfamiliar situation (web programming) and there is a learning curve with that. It may be that a language other than Haskell, i.e. PureScript, although requiring a learning curve, would be more suited to my app's needs and thus save me grief. I don't know. Dennis ​

If you know Haskell, then the remaining bits of PureScript will not take very long. It's like moving from C++ to Java, or Ruby to Python. Most of your experience carries over, and you can learn the differences as they arise. You can likely be productive in PureScript tomorrow. There's a lot of discussion on PureScript development on the FPChat slack, invite link here: https://fpchat-invite.herokuapp.com/ In my experience, PureScript has been much nicer to work with than GHCJS or Elm. PureScript's editor tooling is absolutely fantastic, and the language has "fixed" a number of warts in Haskell. The record system and interop with JavaScript are wonderful, as well. Matt Parsons On Fri, Feb 9, 2018 at 7:54 PM, Dennis Raddle wrote:

Thanks, but what do you think the learning curve will be on PureScript? How similar to Haskell is it?

I want to balance some factors here. As my initial goal is rapid prototyping and experimentation, I'd like to use a language I already know well, in other words Haskell.

But of course even with a familiar language, I'm going into a quite unfamiliar situation (web programming) and there is a learning curve with that.

It may be that a language other than Haskell, i.e. PureScript, although requiring a learning curve, would be more suited to my app's needs and thus save me grief.

I don't know. Dennis ​

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Miso supports touch events, has many examples, and is fairly straightforward to get started with: https://haskell-miso.org https://github.com/dmjio/miso On Fri, Feb 9, 2018 at 6:42 PM, Gregory Popovitch wrote:

Hi Dennis, I've read lots of good things about purescript ( http://www.purescript.org/).

greg

------------------------------ *From:* Haskell-Cafe [mailto:haskell-cafe-bounces@haskell.org] *On Behalf Of *Dennis Raddle *Sent:* Friday, February 09, 2018 9:14 PM *To:* haskell-cafe *Subject:* [Haskell-cafe] web framework

I'd like a recommendation for a way to write web apps in Haskell.

Background: I have written code in Python, C++ and Haskell for many years. However I have done no substantial web programming.

My goal is mathematics-education-themed apps to run on browsers on any device. At first I'll be happy to run the app on my laptop and connect locally with an iPad or smartphone while I sit with my students.

Later I may deploy it at scale "in the cloud" (I mean anyone connected to the internet can run it, and the servers belong to the hosting provider).

Why a browser app? I figure it's the best way to get a portable app that will run on phones, tablets, and computers of all OS's.

Why Haskell? The goal right now is fast prototyping and experimentation, especially for some fairly complex algorithms. I spent some time with JavaScript, TypeScript, and Scala.JS. I'm just so much more comfortable in Haskell with which I can write clean & sophisticated algorithms quickly.

I see lots of mentions of Haskell "platforms" and "stacks" etc. on the Haskell Wiki. But I will confess I don't really know what a "platform" or "stack" is, or which of the options will support my needs. I know close to zero about apps in the browser.

Regarding my UI needs, my app will have lots of graphics and lots of things to click on, drag, etc. It will need to be touch-screen responsive.

Dennis

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