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Comment by copergi | Hacker News Reader

>The fast development cycle -- edit php script, refresh -- is something amazing that you don't get in a lot of statically typed languages

You seriously think that? That's how we do haskell web development. Both yesod and snap do this out of the box. That's how every java developer I know works.

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I have a little bit by way of Haskell chops, and I'll venture that the performance of the Hack typechecker is a very big deal, and it is in a different breed than the turnaround time you get from snap or yesod (or Java).

what makes it a different breed?

Edit: I misread what you wrote. I thought you were saying there was something fundamentally different about the type checker, but more that reload experience is different then what you get with Yesod.

"Type checking is faster than other statically typed languages" is quite different from "other statically typed languages don't offer this workflow", which is what was claimed.

How do you do it in java? Compile (takes time) -> hotswap (takes time), or can't hotswap since changes to signature, will need to restart server (takes lot of time).

http://docs.codehaus.org/display/JETTY/Maven+Jetty+Plugin

Yeah, that's the one we're using. Still takes a couple of seconds, though. And as I said, big changes can't be reloaded, so the whole server will have to be restarted.

>Still takes a couple of seconds, though

How big is your code base, and is it all in one huge file or something? Our stuff is reloaded and ready before I've alt+tabbed back and hit refresh.

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