Subject: Re: [boost] hash_combine vs hash_value
From: Scott McMurray (me22.ca+boost_at_[hidden])
Date: 2011-03-25 22:26:28
On Fri, Mar 25, 2011 at 06:57, Michael Goldshteyn
<mgoldshteyn_at_[hidden]> wrote:
> After reading the explanation of how hash_combine should be used, I am left
> wondering. Why is the recommendation for hash_combine different from what
> one would intuitively expect?
>
With combine, you can also use a non-zero initial value, so Point(x,y)
and BoundingBox(x,y) don't have the same hash, if you happen to mix
types in your tables.