#include <boost/bit_logic/bit_vector.hpp> 
   bit_handle front ( ) ; 

Front returns a Bit Handle to the first bit element of the Bit Container.

For example:

 bit_vector<> v ( 3 ) ; 
 v = "110" ; 					  
 cout << v.front() << endl ;

Ths code would display the following output:

 0

This code throws no exceptions.