February 2002 - Glasgow-haskell-users

Edison library
by David Feuer 12 Feb '02

12 Feb '02

Anyone know if Okasaki plans to expand Edison to include efficient sets and/or other non-heap collections? It looks like the library hasn't changed for 2 years... David Feuer

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RE: Timetable for reading external Core files?
by Simon Peyton-Jones 12 Feb '02

12 Feb '02

Jeff Lewis is actively working on this, I'm happy to say. My guess would be a few months, but not a few weeks or a few years. Simon | -----Original Message----- | From: Kirsten Chevalier [mailto:krc@uclink.berkeley.edu] | Sent: 11 February 2002 22:09 | To: glasgow-haskell-users(a)haskell.org | Subject: Timetable for reading external Core files? | | | The release notes for GHC 5.02 say: | "Ultimately we plan that Core files can also be read by GHC." | | Any idea whether this will be next week, next month, next | year, or next decade? | | Thanks, | Kirsten | | -- | Kirsten Chevalier * krc(a)uclink.berkeley.edu * Often in error, | never in doubt "...We're all damned fools! Some of us just | have more fun with it than others." --Armistead Maupin | http://www.cs.berkeley.edu/~krc/ | _______________________________________________ | Glasgow-haskell-users mailing list | Glasgow-haskell-users(a)haskell.org | http://www.haskell.org/mailman/listinfo/glasgow-| haskell-users |

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test
by Sean Seefried 12 Feb '02

12 Feb '02

please ignore

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Timetable for reading external Core files?
by Kirsten Chevalier 11 Feb '02

11 Feb '02

The release notes for GHC 5.02 say: "Ultimately we plan that Core files can also be read by GHC." Any idea whether this will be next week, next month, next year, or next decade? Thanks, Kirsten -- Kirsten Chevalier * krc(a)uclink.berkeley.edu * Often in error, never in doubt "...We're all damned fools! Some of us just have more fun with it than others." --Armistead Maupin http://www.cs.berkeley.edu/~krc/

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Installing binary rpm on Redhat 7.1 - libreadline issue
by Erik Williamson 11 Feb '02

11 Feb '02

Hi All! Has anyone else had this problem? I've got readline & readline-devel installed. Given, I'm trying to install an RPM build on a 7.2 sytem onto a 7.1, but... Is it something to do with my (nonexistant) LIBRARY_PATH environment? [erik@proto rpms]$ rpm -Uvh ghc-5.02.2-rh72-1.i386.rpm error: failed dependencies: libreadline.so.4 is needed by ghc-5.02.2-1 [erik@proto rpms]$ rpm -qa | grep readline readline-devel-4.1-9 readline-4.1-9 [erik@proto rpms]$ rpm -ql readline /usr/lib/libhistory.so.4 /usr/lib/libhistory.so.4.1 /usr/lib/libreadline.so.4 /usr/lib/libreadline.so.4.1 Thanks for any insight!

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Re: efficiency question
by Kirsten Chevalier 11 Feb '02

11 Feb '02

On Sat, Feb 09, 2002 at 12:01:02PM -0500, glasgow-haskell-users-request(a)haskell.org wrote: > > > I'd say that's because in the second case you also got to apply the (,), > > besides the (+)/(-) constructor during the transversing... > > Am I right? > > opss... I meant to write: the (,) constructor besides the (+)/(-)... > J.A. > I'd guess that it's not just that you have to apply the (,) constructor -- it also has to do with the fact that the tuples it's constructing here are boxed. -- Kirsten Chevalier * krc(a)cs.berkeley.edu * Often in error, never in doubt "When nothing remains of me, / Not a particle, / I shall sparkle in the footnote of an article." -- Daniel Aaron http://www.cs.berkeley.edu/~krc/

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RE: Increasing stack size
by Simon Marlow 11 Feb '02

11 Feb '02

> I'm having trouble adjusting the stack size, viz: > > + cacheprof +RTS -K8M -RTS gcc -I. -I. -c /tmp/ghc5664.s -o > PrelTup.c_o > Stack space overflow: current size 1048576 bytes. > Use `+RTS -Ksize' to increase it. The -K option definitely works, at least on simple examples I've tried here. It looks like the option somehow isn't getting through to the compiled program; is it perhaps being gobbled up by an intermediate stage (Makefile, script, whatever)? Cheers, Simon

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Increasing stack size
by Nicholas Nethercote 11 Feb '02

11 Feb '02

Hi, I'm having trouble adjusting the stack size, viz: + cacheprof +RTS -K8M -RTS gcc -I. -I. -c /tmp/ghc5664.s -o PrelTup.c_o Stack space overflow: current size 1048576 bytes. Use `+RTS -Ksize' to increase it. I'm trying to increase it! The program was compiled with GHC 5.02.2. Any ideas why the stack size isn't increasing? Thanks. -- Nick Nethercote njn25(a)cam.ac.uk

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RE: efficiency question
by Julian Seward (Intl Vendor) 11 Feb '02

11 Feb '02

The transformations that the compiler does, especially with -O, are sufficiently complex that trying to second-guess the performance effects of source changes is difficult. You'd get a much better handle on this by reading the post-optimised program, which you can get with -ddump-simpl. Good luck! This is not for the faint of heart. J | -----Original Message----- | From: Jorge Adriano [mailto:jadrian@mat.uc.pt] | Sent: Sunday, February 10, 2002 7:18 PM | To: glasgow-haskell-users(a)haskell.org | Subject: Re: efficiency question | | | On Sunday 10 February 2002 18:48, Kirsten Chevalier wrote: | > I'd guess that it's not just that you have to apply the (,) | constructor -- | > it also has to do with the fact that the tuples it's | constructing here are | > boxed. | | could you elaborate a little more on that (boxed / unboxed) | or provide a link | on the subject? | | thanks | J.A. | _______________________________________________ | Glasgow-haskell-users mailing list | Glasgow-haskell-users(a)haskell.org | http://www.haskell.org/mailman/listinfo/glasgow-haskell-users |

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socket question
by Hal Daume III 11 Feb '02

11 Feb '02

suppose i want to write a stupid ftp client, i want to connect to the ftp server, wait for it to give it's intro stuff (welcome to blah, username: ) and then it wants input. how do i do something like this? so far, i have (don't laugh, this is the first socket haskell program i've written. ever.) > connect cfg = withSocketsDo $ > do h <- connectTo (remoteAddr cfg) (Service (remoteType cfg)) > hWaitForInput h 1000 > s <- readWhileAvailable h > return s > > readWhileAvailable h = > do b <- hReady h > if b > then do c <- hGetChar h > s <- readWhileAvailable h > return (c : s) > else do return [] but this doesn't seem to ever halt :) if i get rid of the hWaitForInput, it returns immediately with nothing. if i replace hWaitForInput...readWhileAvailable with "s <- getContents h ; return (take 10 s)" i get the beginning of the intro message (so it is connecting properly). please someone help me :) -- Hal Daume III "Computer science is no more about computers | hdaume(a)isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume

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