October 2001 - Glasgow-haskell-users

HOpengl on Ghc 5.02
by Nicolas 08 Oct '01

08 Oct '01

Hi there, Sorry for this stupid question: Is there a distrib of a HOpenGl package working with ghc 5.02. I tried the CVS but don't manage to make it work (ghc 5.03 panic). Can someone help me? Cheers, Nicolas Oury

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RE: what is :a
by Simon Marlow 08 Oct '01

08 Oct '01

> Who would tell, please, what is the real difference between > :load and :add in ghci-5.02 ? There is a set of current target modules, call that set S. Then: :load M1..Mn ===> S := { M1..Mn } :add M1..Mn ===> S := S u { M1..Mn } In addition, :load unloads all currently loaded modules. Both commands initiate a reload starting from the target modules. Cheers, Simon

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hdirect and ghc 5.02
by Sven Eric Panitz 08 Oct '01

08 Oct '01

Just a short question: is there a ghc 5.02 compatible distribution of hdirect available? Sven Eric -- ______________________________________________________________ Sven Eric Panitz Uhlandstr. 12 D-64297 Darmstadt Software AG sep(a)softwareag.com (+49)6151-92-1426 --- when I cannot sing my heart, I can only speak my mind ---

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UniCode
by Krasimir Angelov 08 Oct '01

08 Oct '01

Why Char is 32 bit. UniCode characters is 16 bit. __________________________________________________ Do You Yahoo!? NEW from Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. http://geocities.yahoo.com/ps/info1

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5.02 .deb?
by Ashley Yakeley 07 Oct '01

07 Oct '01

Is there a Debian package for GHC 5.02? -- Ashley Yakeley, Seattle WA

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Re: UniCode
by Marcin 'Qrczak' Kowalczyk 06 Oct '01

06 Oct '01

Fri, 5 Oct 2001 23:23:50 +1000, Andrew J Bromage <andrew(a)bromage.org> pisze: > There is a set of one million (more correctly, 1M) Unicode characters > which are only accessible using surrogate pairs (i.e. two UTF-16 > codes). There are currently none of these codes assigned, This information is out of date. AFAIR about 40000 of them is assigned. Most for Chinese (current, not historic). > So rare, in fact, that the cost of strings taking up twice the > space that the currently do simply isn't worth the cost. In Haskell strings already have high overhead. In GHC a Char# value (inside Char object) always takes the same size as the pointer (32 or 64 bits), no matter how much of it is used. > It just goes to show that strings are not merely arrays of characters > like some languages would have you believe. In Haskell String = [Char]. It's true that Char values don't necessarily correspond to glyphs, but Strings are composed of Chars. -- __("< Marcin Kowalczyk * qrczak(a)knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK

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How to read heap Profile?
by Saswat Anand 06 Oct '01

06 Oct '01

Hi, Ghc doc does not say much about how to read the heap profile (.hp file). Could somebody explain. And how can one tell from the graph generated by hp2ps if the program has space leak. Thanks, Saswat

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Re: UniCode
by Marcin 'Qrczak' Kowalczyk 05 Oct '01

05 Oct '01

05 Oct 2001 14:35:17 +0200, Ketil Malde <ketil(a)ii.uib.no> pisze: > Does Haskell's support of "Unicode" mean UTF-32, or full UCS-4? It's not decided officially. GHC uses UTF-32. It's expected that UCS-4 will vanish and ISO-10646 will be reduced to the same range U+0000..10FFFF as Unicode. -- __("< Marcin Kowalczyk * qrczak(a)knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK

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scope in ghci
by S.D.Mechveliani 05 Oct '01

05 Oct '01

To my >> [..] >> Dm1> sort $ dm1 [1%2,1%3] -- contrived example >> is impossible. >> Instead, it needs >> Dm1> List.sort Prelude.$ dm1 [1 Ratio.% 2, 1 Ratio.% 3] Marcin 'Qrczak' Kowalczyk <qrczak(a)knm.org.pl> writes > This happens when the module Dm1 is compiled. It's because a compiled > module doesn't provide the information which names were in scope in > its source. > [..] In this particular experiment Dm1 ... Dm9 were *interpreted* and the rest D project was compiled and loaded as object code from library via package. But the case of compiled Dm1 is sufficient too to present certain small question. ----------------- Serge Mechveliani mechvel(a)botik.ru

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Re: UniCode
by Marcin 'Qrczak' Kowalczyk 05 Oct '01

05 Oct '01

Fri, 5 Oct 2001 02:29:51 -0700 (PDT), Krasimir Angelov <ka2_mail(a)yahoo.com> pisze: > Why Char is 32 bit. UniCode characters is 16 bit. No, Unicode characters have 21 bits (range U+0000..10FFFF). They used to fit in 16 bits a long time ago, and they are sometimes encoded as UTF-16 (each character occupies one or two 16-bit words). -- __("< Marcin Kowalczyk * qrczak(a)knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK

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