[Boost-users] [property_map] constructor of vector_property_map

Subject: [Boost-users] [property_map] constructor of vector_property_map
From: Andreas Fabri (andreas.fabri_at_[hidden])
Date: 2013-02-13 04:10:44

Hello,

Why is initial_size in the constructor
__________________________________________________________________
vector_property_map(unsigned initial_size, const IndexMap& index = 
IndexMap())

This constructor version allows to specify maximum index of element that 
will be stored. Correct number will improve performance, but semantic is 
always the same.

Source:
http://www.boost.org/doc/libs/1_53_0/libs/property_map/doc/vector_property_map.html
__________________________________________________________________

not std::size_t, for the simple reason that the std::vector
might be bigger.

best regards,

andreas

-- 
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project
phone: +33.492.954.912    skype: andreas.fabri