equal_list() using a bool vector

[Mark Merendino]

Im trying to use the equal_list() method and passing a vector to it.
such as in the example from the manual...
 
////////////////////////
The vector form (not shown above) allows you to pass a boolean vector
which is a time saver if you use the some pattern more than once as it
avoids having to create the vector from the arguments each time. If a is
a boolean vector then a[0] will hold wether to include the first
variable a[1] the second etc... For example: 

	
	vector<bool> a;    
	a[0] = false; a[1] = false; a[2] = true; a[3] = true; a[4] =
false;   
	query << "SELECT * FROM stock WHERE " << q.equal_list(" AND ",
a);  

///////////
 
(Note: Im passing "&a" because it wants to receive a pointer to a
vector.  Think this is a typo in the example.)
 
However im getting and unresolved external symbol. (...Note, "SSB" is my
class)
 
"public: class SSB_cus_equal_list<enum mysqlpp::quote_type0> __thiscall
SSB::equal_list<enum mysqlpp::quote_type0>(char const *, char const *,
enum mysqlpp::quote_type0, class std::vector<bool,class
std::allocator<bool> > *) const"
 
Does the definition of this method exist?  I have tried to figure it out
but im not sure.  Im a little weak in STL to say the least and my head
is spinning trying to follow this.
 
Any help would be appreciated.  Anyone using equal_list() this way with
out trouble?
 
Thanks