Brian Hulley wrote:
Another thing which causes difficulty is the use of qualified operators,
and the fact that the qualification syntax is in the context free
grammar instead of being kept in the lexical syntax (where I think it
belongs).
You are in luck, because according to the Haskell
Thomas Hallgren wrote:
Brian Hulley wrote:
Another thing which causes difficulty is the use of qualified
operators, and the fact that the qualification syntax is in the
context free grammar instead of being kept in the lexical syntax
(where I think it belongs).
You are in luck, because
Hello Christophe,
Thursday, June 1, 2006, 6:59:56 AM, you wrote:
data Plop a b = Foo a | Bar b deriving Show
print $ filter isFoo l2
btw, DrIFT already have modules what implements this, along with
many other. it's a list of basic rules included in DrIFT:
standardRules = [(test,dattest,
Hello Haskell-cafe,
i have analyzed performance of various sum-file implementations (see
http://shootout.alioth.debian.org/debian/benchmark.php?test=sumcollang=all )
first, one-liner implementation (attached as b.hs) works about 500
seconds on my cpu. it can be made 10x faster just by using it's
Bulat Ziganshin wrote:
1. In terms of Haskell, Judy is a library of _mutable_ collections of
_unboxed_ elements. i pointed you to the Array wiki page, where
differences between boxed and unboxed, mutable and immutable
datastructures are described
There's no reason you can't use Judy to
Hello Simon,
Thursday, June 1, 2006, 2:13:03 PM, you wrote:
Bulat Ziganshin wrote:
1. In terms of Haskell, Judy is a library of _mutable_ collections of
_unboxed_ elements. i pointed you to the Array wiki page, where
differences between boxed and unboxed, mutable and immutable
Bulat Ziganshin wrote:
Thursday, June 1, 2006, 2:13:03 PM, you wrote:
Bulat Ziganshin wrote:
1. In terms of Haskell, Judy is a library of _mutable_ collections of
_unboxed_ elements. i pointed you to the Array wiki page, where
differences between boxed and unboxed, mutable and immutable
Robert Dockins wrote:
To make this work, you're going to have to convince the compiler to accept
overlapping instances and then make sure they don't overlap :) In the
second instance, what you really want to say is instance c [a] c, only where
c is not an application of (-). As I recall,
On 6/1/06, Christophe Poucet [EMAIL PROTECTED] wrote:
That's why
today I have created an automated derivation for data constructor
filtering. As I started coding someone mentioned that something similar
can be done with list comprehensions, so I'm not certain about the scope
of usefulness,
Hello.
I have 4 bytes long String and i want to convert it to Float.
How can i do this in Haskell? Don't want to use Ptr's.
Thanks.
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Robert Dockins wrote:
] In the second instance, what you really want to say is instance c [a]
] c, only where c is not an application of (-). As I recall, there is
] a way to express such type equality/unequality using typeclasses, but
] I don't remember how to do it offhand.
For those
Hi,
I need to edit big text files (5 to 500 Mb). But I just need to
change one or two small lines, and save it. What is the best way to do
that in Haskell, without creating copies of the whole files?
Thanks,
Maurício
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briqueabraque:
Hi,
I need to edit big text files (5 to 500 Mb). But I just need to
change one or two small lines, and save it. What is the best way to do
that in Haskell, without creating copies of the whole files?
I'd think maybe a lazy bytestring would be ok.
Something like:
dons:
briqueabraque:
Hi,
I need to edit big text files (5 to 500 Mb). But I just need to
change one or two small lines, and save it. What is the best way to do
that in Haskell, without creating copies of the whole files?
I'd think maybe a lazy bytestring would be ok.
dons:
briqueabraque:
Hi,
I need to edit big text files (5 to 500 Mb). But I just need to
change one or two small lines, and save it. What is the best way to do
that in Haskell, without creating copies of the whole files?
Thinking further, since you want to avoid copying on
All,
I intend to start using Eclipse as my IDE. Please pass along any
suggestions that I may find useful.
Thanks, Walt
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All,
Is there a list for those of us who teach Haskell ?
Or should teaching questions be posted here?
Thanks, Walt
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