Re: [Haskell-cafe] Re: Libraries for Commercial Users

brad.larsen:

On Sat, Oct 10, 2009 at 5:11 PM, Don Stewart wrote:

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brad.larsen:

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John,

On Thu, Oct 8, 2009 at 3:20 PM, John A. De Goes wrote: [...]

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JVM is cross-platform, and contains sufficient typing information to permit one to write something like, "import foreign jvm java.list.Collection", and have typed access to the whole class and all of its methods. [...]

Having painless Haskell <- Java interoperability would be great.  I'm curious though:  could it really be so simple as a one-line ``import foreign jvm'' directive?  I imagine the purity mismatch between Haskell and Java would be very troublesome.

No more so than C, surely. We're used to stateful APIs. They're a pain. [...]

The use of foreign C libraries in Haskell is typically done through definition of lots of boilerplate code, putting a safe, workable Haskell veneer over the library. Right?

I got the impression (perhaps wrongly) that John was suggesting a simple one-line ``import foreign jvm LIBRARY'' directive to let you use LIBRARY without writing all that boilerplate. Which would be very convenient, but is rather different than the situation with C libraries.

I don't see how this is enough -- any more than the one line imports of C libraries are enough. It'd be a good start.