Re: Which is faster? a hash Table or a std::map lookup table

From:
"Ben Voigt [C++ MVP]" <bvoigt@newsgroup.nospam>
Newsgroups:
microsoft.public.vc.language
Date:
Mon, 12 Oct 2009 00:53:45 -0500
Message-ID:
<66510C19-352E-4219-8FE3-DFA8B110466D@microsoft.com>
std::map is a hash table in most compiler libraries, I believe.

Although for your example, you probably want to optimize nearest-neighbor
searching and I've heard there are much better data structures for that.

"Jack" <jl@knight.com> wrote in message
news:eQLVfSlSKHA.4020@TK2MSFTNGP05.phx.gbl...

I would like to map D3DXVECTOR3 points to
boolean values. They are used as markers of obstacles to be used in
pathfinding. I wonder which one is
faster? a hash table or std::map lookup table
for example
if Point(10,10,10) is an obstacle, I want to look it
up quickly and returns false.... or vice versa..
Thank in advance for any suggestion...
Jack

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