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This is the documentation for a snapshot of the develop branch, built from commit c62ec932af.

Struct template cache_begin



// In header: <boost/intrusive/options.hpp>

template<bool Enabled> 
struct cache_begin {


This option setter specifies if the container will cache a pointer to the first non-empty bucket so that begin() is always constant-time. This is specially helpful when we can have containers with a few elements but with big bucket arrays (that is, hashtables with low load factors).