Re: [Boost-users] [fusion] adapted std::pair and ostream

Subject: Re: [Boost-users] [fusion] adapted std::pair and ostream
From: Nathan Ridge (zeratul976_at_[hidden])
Date: 2011-07-19 19:15:18

> No, it can't compile. It will only compile if ADL pickus up the << from
> boost::fusion, but it can't do that because pair is in namespace std.
> Could you point me to the docs where it says it should? It's probably
> a doc bug.

>From [1]:

"The I/O operators: << and >> work generically on all Fusion sequences. 
The global operator<< has been overloaded for generic output streams such 
that Sequence(s) are output by recursively calling operator<< for each 
element. Analogously, the global operator>> has been overloaded to extract 
Sequence(s) from generic input streams by recursively calling operator>> 
for each element."

Notice it says the **global** operators << and >> are overloaded.

Regards,
Nate.

[1] http://www.boost.org/doc/libs/1_47_0/libs/fusion/doc/html/fusion/sequence/operator/i_o.html