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

Subject: Re: [boost] [property-map] Generalizing identity_property_map for arbitrary types
From: Belcourt, Kenneth (kbelco_at_[hidden])
Date: 2009-12-08 18:57:02

On Dec 8, 2009, at 3:57 PM, Jeremiah Willcock wrote:

> On Tue, 8 Dec 2009, Belcourt, Kenneth wrote:
>
>> 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.
>
> I don't see a patch attached to your email.  Could you please file a
> feature request on Trac for property_map?  Thank you.

https://svn.boost.org/trac/boost/ticket/3739

-- Noel