Re: [boost] [property-map] Generalizing identity_property_map for arbitrary types

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