Re: [Haskell-beginners] Named Pipes Et Cetera

On Tuesday 23 November 2010 15:16:59, Magnus Therning wrote:

On Tue, Nov 23, 2010 at 14:09, Patrick LeBoutillier

wrote:

...

Matthew,

Does it return immediately when you start it or only when you try to write to the pipe with some client?

Here's what I get on my Linux box:

$ rm /tmp/dld.fifo && ./pipe & [1] 8603 $ echo -e "1\n2\n3" > /tmp/dld.fifo 1 2 3 pipe: /tmp/dld.fifo: hGetLine: end of file

Would you run 'uname -a' and 'ghc --version'?

I don't see that behaviour here

% uname -a Linux bryma 2.6.35-ARCH #1 SMP PREEMPT Sat Oct 30 21:22:26 CEST 2010 x86_64 Intel(R) Core(TM)2 Quad CPU Q9450 @ 2.66GHz GenuineIntel GNU/Linux % ghc --version The Glorious Glasgow Haskell Compilation System, version 6.12.3

% rm /tmp/dld.fifo && ./pipe& [1] 30762 % pipe: /tmp/dld.fifo: hGetLine: end of file

[1] + exit 1 ./pipe

I get the same with 6.12.3 and 7.0.1. $ uname -a Linux linux-mkk1 2.6.27.54-0.1-pae #1 SMP 2010-10-19 18:40:07 +0200 i686 i686 i386 GNU/Linux

/M