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Re: Map implementation [message #51528 is a reply to message #51525]

Wed, 10 April 2019 17:09

Novo
Messages: 1430
Registered: December 2006

Ultimate Contributor

cbpporter wrote on Wed, 10 April 2019 05:39

I also talked with a colleague and his hashmap version is supposedly 3x+ faster than stl, so it looks like it is very possible to greatly outperform it.

IMHO, it is impossible to create one ideal hash table which will greatly outperform STL in all possible scenarios.
Let's take a look at two scenarios.

1. One million hash tables containing one hundred records.
2. One hash table containing one hundred million records.

You will need two completely different implementations in these cases.

Two more scenarios.

1. Add data once and search for data most of the time.
2. Add/remove data most of the time and search for it occasionally.

Again, you will need two completely different implementations.

Regards,
Novo

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[Message index]

		Map implementation By: cbpporter on Thu, 21 March 2019 16:32
		Re: Map implementation By: mirek on Fri, 22 March 2019 07:18
		Re: Map implementation By: Novo on Wed, 27 March 2019 03:33
		Re: Map implementation By: cbpporter on Tue, 02 April 2019 14:13
		Re: Map implementation By: Novo on Tue, 02 April 2019 17:48
		Re: Map implementation By: Novo on Tue, 02 April 2019 18:39
		Re: Map implementation By: cbpporter on Mon, 08 April 2019 13:57
		Re: Map implementation By: mirek on Mon, 08 April 2019 22:37
		Re: Map implementation By: cbpporter on Tue, 09 April 2019 14:57
		Re: Map implementation By: mirek on Tue, 09 April 2019 17:16
		Re: Map implementation By: mirek on Wed, 10 April 2019 11:07
		Re: Map implementation By: cbpporter on Wed, 10 April 2019 11:39
		Re: Map implementation By: Novo on Wed, 10 April 2019 17:09
		Re: Map implementation By: mirek on Wed, 10 April 2019 17:37
		Re: Map implementation By: Novo on Sat, 13 April 2019 20:58
		Re: Map implementation By: Novo on Sat, 13 April 2019 21:07
		Re: Map implementation By: mirek on Sun, 14 April 2019 08:03
		Re: Map implementation By: Novo on Sun, 14 April 2019 18:55
		Re: Map implementation By: mirek on Sun, 14 April 2019 19:52
		Re: Map implementation By: mirek on Tue, 16 April 2019 12:38
		Re: Map implementation By: Novo on Tue, 16 April 2019 16:38
		Re: Map implementation By: mirek on Tue, 16 April 2019 19:33
		Re: Map implementation By: Novo on Tue, 16 April 2019 22:36
		Re: Map implementation By: Novo on Wed, 17 April 2019 05:40
		Re: Map implementation By: mirek on Wed, 17 April 2019 08:54
		Re: Map implementation By: Novo on Wed, 17 April 2019 16:13
		Re: Map implementation By: mirek on Wed, 17 April 2019 18:39
		Re: Map implementation By: mirek on Fri, 07 June 2019 13:58
		Re: Map implementation By: Novo on Tue, 25 June 2019 15:20
		Re: Map implementation By: mirek on Wed, 26 June 2019 12:07
		Re: Map implementation By: Novo on Mon, 01 July 2019 06:26
		Re: Map implementation By: mirek on Mon, 01 July 2019 17:53
		Re: Map implementation By: Novo on Sat, 13 April 2019 21:25
		Re: Map implementation By: Novo on Wed, 10 April 2019 16:13
		Re: Map implementation By: mirek on Wed, 10 April 2019 17:50
		Re: Map implementation By: Novo on Wed, 10 April 2019 16:48

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