Re: [boost] [lambda] Lambda and operator overloading

From: Peter Dimov (pdimov_at_[hidden])
Date: 2008-03-09 12:58:38

Carlos Rafael Giani:
...

> template < typename ValueType, unsigned int Size >
> std::ostream& operator << (std::ostream &out, std::tr1::array < ValueType, 
> Size > const &array)

In general, when defining an overloaded operator<< for a type X, this 
definition needs to go in the namespace of X in order to be found by 
argument-dependent lookup. So depending on whether std::tr1::array is real 
or an alias for boost::array, you need to put the above operator<< in 
namespace std::tr1 or namespace boost, respectively.