id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
3739,Generalizing identity_property_map for arbitrary types,Noel Belcourt,Jeremiah Willcock,"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
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",Feature Requests,closed,Boost 1.42.0,property_map,Boost 1.41.0,Not Applicable,fixed,,