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Today's Topics:
1. arrays (Dennis Raddle)
2. Re: arrays (Rafael Gustavo da Cunha Pereira Pinto)
3. Re: arrays (David McBride)
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Message: 1
Date: Mon, 30 Jan 2012 10:41:17 -0800
From: Dennis Raddle <dennis.rad...@gmail.com>
Subject: [Haskell-beginners] arrays
To: Haskell Beginners <beginners@haskell.org>
Message-ID:
<CAKxLvoqiLu7EuUvsS4y9BwyjEoN3DGtNtLqMd7CoONL=oxv...@mail.gmail.com>
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I've got a problem that is linear time with mutable arrays, and something
god-awful complicated (not sure of time complexity) without them.
What's the easiest way to use and understand mutable arrays? is it
Data.Array that I want? Any good tutorials?
Thanks,
Dennis
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Message: 2
Date: Mon, 30 Jan 2012 20:41:36 -0200
From: Rafael Gustavo da Cunha Pereira Pinto
<rafaelgcpp.li...@gmail.com>
Subject: Re: [Haskell-beginners] arrays
To: Dennis Raddle <dennis.rad...@gmail.com>, Haskell Beginners
<beginners@haskell.org>
Message-ID:
<CAKeofDy27_3hcSTxKCRmnfMiC5437FK8XSNZ=n6bnvo8jog...@mail.gmail.com>
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My advice as a begginer myself: experiment! Do some toy array operation,
such as matrix multiplication.
Test, test ans test. Mutable arrays are kinda easy, and very fast!
I did a LU matrix decomposition with pivoting a few years ago and it was
pretty awesome.
With mutable arrays it was about 5 times faster than normal arrays.
Regards
Rafael
On Mon, Jan 30, 2012 at 16:41, Dennis Raddle <dennis.rad...@gmail.com>wrote:
> I've got a problem that is linear time with mutable arrays, and something
> god-awful complicated (not sure of time complexity) without them.
>
> What's the easiest way to use and understand mutable arrays? is it
> Data.Array that I want? Any good tutorials?
>
> Thanks,
> Dennis
>
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
>
--
Rafael Gustavo da Cunha Pereira Pinto
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Message: 3
Date: Mon, 30 Jan 2012 18:59:28 -0500
From: David McBride <toa...@gmail.com>
Subject: Re: [Haskell-beginners] arrays
To: Dennis Raddle <dennis.rad...@gmail.com>
Cc: Haskell Beginners <beginners@haskell.org>
Message-ID:
<CAN+Tr41=jaVT8f=mc=otdykq33hh7jw9y5xfyhsc0d0w7io...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Try the vector library. It has both immutable and mutable arrays and
is very good.
On Mon, Jan 30, 2012 at 1:41 PM, Dennis Raddle <dennis.rad...@gmail.com> wrote:
> I've got a problem that is linear time with mutable arrays, and something
> god-awful complicated (not sure of time complexity) without them.
>
> What's the easiest way to use and understand mutable arrays? is it
> Data.Array that I want? Any good tutorials?
>
> Thanks,
> Dennis
>
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
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