[Haskell-cafe] Can Haskell outperform C++?

Gregg Lebovitz glebovitz at gmail.com
Thu May 17 14:24:46 CEST 2012


I think this question is for Richard. I haven't had a chance to play 
with these methods. I will try to do that today.


On 5/17/2012 6:07 AM, Roman Werpachowski wrote:
>> From: "Richard O'Keefe"<ok at cs.otago.ac.nz>
>> Subject: Re: [Haskell-cafe] Can Haskell outperform C++?
>> To: Haskell Cafe<haskell-cafe at haskell.org>
>> Message-ID:<5F6605A2-DFE0-4AEA-9987-3B07DEF34C42 at cs.otago.ac.nz>
>> Content-Type: text/plain; charset=us-ascii
>> On 17/05/2012, at 2:04 PM, Gregg Lebovitz wrote:
>>> Richard,
>>> Thank you. This is an example of what I had in mind when I talked about changing the playing field. Do you have a slide deck for this lecture that you would be willing to share with me? I am very interested in learning more.
>> No slide deck required.  The task is "generating alternating permutations".
>> Method 1: generate permutations using a backtracking search;
>>           when a permutation is generated, check if it is alternating.
>> Method 2: use the same backtracking search, but only allow extensions
>>           that preserve the property of being an alternating permutation.
> Gregg,
> what makes Method 2 so much harder than Method 1 to implement in C or C++?
> Regards,
> RW
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