Boost logo

Boost :

Subject: Re: [boost] [property-map] Generalizing identity_property_map for arbitrary types
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2009-12-08 17:57:48

On Tue, 8 Dec 2009, Belcourt, Kenneth wrote:

> Hi,
> I've found the property map library to be very useful and would like to
> propose a minor enhancement to permit the identity_property_map to work for
> arbitrary types. The reason for this is that some computationally intensive
> algorithms suffer noticeable performance degradation when I convert them to
> generic algorithms using property maps. Having a typed identity property map
> that returns, for example, the double passed into it significantly speeds up
> our algorithms, at least for those fields that are not mutable.
> I've attached a patch, and could supply a motivating example, if anyone is
> interested.
> -- Noel

I don't see a patch attached to your email. Could you please file a
feature request on Trac for property_map? Thank you.

-- Jeremiah Willcock

Boost list run by bdawes at, gregod at, cpdaniel at, john at