Re: [Haskell-cafe] How to handle exceptions in conduit?

Hi, there On 2012/11/01, at 21:23, Michael Snoyman wrote: Due to various technical reasons regarding the nature of conduit, you can't currently catch exceptions within the Pipe monad. You have two options: * Catch exceptions before `lift`ing. * Catch exceptions thrown from the entire

[Haskell-cafe] [ANNOUNCE] network-bitcoin

Hello Cafe, You've heard of the neat crypto-currency bitcoin[1], haven't you? Well, I've just released network-bitcoin[2] which provides Haskell bindings to the bitcoin daemon. Hopefully, this will make your bitcoin-related goals easier to achieve. Who knows, it might even make bitcoin

Re: [Haskell-cafe] Is XMonad still developed or with a current maintainer?

Anyone knows something? On 5 November 2012 08:38, Alfredo Di Napoli alfredo.dinap...@gmail.comwrote: Hi guys, looking at the Darcs repo it seems that something is happening, but XMonad wasn't updated in a year on Hackage and everything seems to be still. Is XMonad still actively developed?

Re: [Haskell-cafe] Is XMonad still developed or with a current maintainer?

The generic email (xmo...@haskell.org) is the xmonad mailing list [1]. However, if you are not subscribed, your emails might get dropped or be kept in the moderation queue. So I suggest subscribing and trying again. [1]: http://www.haskell.org/mailman/listinfo/xmonad Roman * Alfredo Di Napoli

Re: [Haskell-cafe] Is XMonad still developed or with a current maintainer?

Hey Roman, thanks for the tip. I will also try on the irc channel, hoping to find someone :) Cheers, A. On 5 November 2012 15:45, Roman Cheplyaka r...@ro-che.info wrote: The generic email (xmo...@haskell.org) is the xmonad mailing list [1]. However, if you are not subscribed, your emails

Re: [Haskell-cafe] Is XMonad still developed or with a current maintainer?

I am subscribed to the xmonad mailing list. But the question still stands.  The list is pretty quiet and it seems xmonad is maintainerless :( -- Původní zpráva -- Od: Roman Cheplyaka r...@ro-che.info Datum: 5. 11. 2012 Předmět: Re: [Haskell-cafe] Is XMonad still developed or

[Haskell-cafe] Does this have a name?

The function app1 f x = f = ($ x) or equivalently app2 f x = join (f * pure x) with type Monad m = m (a - m b) - a - m b ? Hoogle did not help. Jacques PS: a nice point-free version would be appreciated as well. I can easily change app1 and app2 myself to point-free with enough

[Haskell-cafe] Partial application in case expression rules

Occasionally I find it would be nice to be able to omit some or all constructor parameters from a pattern matching rule. Perhaps the compiler could put them in for you and apply them to the right hand side of the rule ? data Tree a = Leaf a| Node (Tree a) (Tree a) treeFold :: (a - a - a)

Re: [Haskell-cafe] How to handle exceptions in conduit?

On Mon, Nov 5, 2012 at 9:51 PM, Michael Snoyman mich...@snoyman.com wrote: On Nov 5, 2012 2:42 PM, Hiromi ISHII konn.ji...@gmail.com wrote: Hi, there On 2012/11/01, at 21:23, Michael Snoyman wrote: Due to various technical reasons regarding the nature of conduit, you can't

Re: [Haskell-cafe] Partial application in case expression rules

There's a Glasgow extension that gets you to this: treeFold :: (a - a - a) - Tree a - a treeFold f = \case Leaf {} - id Node {} - f `on` treeFold f Or maybe this if parens are needed: treeFold :: (a - a - a) - Tree a - a treeFold f = \case (Leaf {}) - id (Node {}) - f `on` treeFold f

Re: [Haskell-cafe] Partial application in case expression rules

On Mon, Nov 5, 2012 at 4:15 PM, Stephen Tetley stephen.tet...@gmail.comwrote: There is a long extant GHC extension to elide constructor arguments f (Leaf {}) = ... f (Node {}) = ... I don't think that's an extension, it falls out directly from how Haskell builds records on top of ADTs and is

Re: [Haskell-cafe] [ANNOUNCE] network-bitcoin

Thanks. I like the idea of BitCoin very much I'll l try to integrate it in MFlow 2012/11/5 Clark Gaebel cgae...@uwaterloo.ca Hello Cafe, You've heard of the neat crypto-currency bitcoin[1], haven't you? Well, I've just released network-bitcoin[2] which provides Haskell bindings to the

Re: [Haskell-cafe] Partial application in case expression rules

I had not thought of this record syntax. But it does not perform the currying effect shown in the example; it just drops the omitted fields. Brandon Allbery allber...@gmail.com wrote: On Mon, Nov 5, 2012 at 4:15 PM, Stephen Tetley stephen.tet...@gmail.comwrote: There is a long extant GHC

Re: [Haskell-cafe] Defining a Strict language pragma

On Mon, Nov 05, 2012 at 02:52:56PM -0800, Johan Tibell wrote: Hi all, I would like to experiment with writing some modules (e.g. low-level modules that do a lot of bit twiddling) in a strict subset of Haskell. The idea is to remove boilerplate bangs (!) and instead declare the whole module

Re: [Haskell-cafe] Defining a Strict language pragma

On Mon, Nov 5, 2012 at 3:28 PM, Iustin Pop iu...@k1024.org wrote: Did you mean here it's still possible to define _lazy_ arguments? The duality of !/~ makes sense, indeed. Yes, it would be nice to still make arguments explicitly lazy, using ~. ___