[boost] Re: Formal review of "Output Formatters" library beginstoday

From: David Abrahams (dave_at_[hidden])
Date: 2004-09-12 13:20:45

"Reece Dunn" <msclrhd_at_[hidden]> writes:

>>I'm generally not a great fan of statefulness, but this also seems
>>like a reasonable thing to want:
>>
>>    namespace io = boost::io;
>>    std::cout << io::sequence_delimiters("{ ", " }");
>>    std::cout << io::sequence( vec );
>>    // output: { 1, 2, 3 }
>
> You can achieve something like this using:
>
>    io::formatter< const char * > fmt( "{ ", " }" );
>    std::cout << io::sequence( vec ).format( fmt );
>
> If there are any better alternatives, I am willing to listen.

Well, I think my alternative is better if you want a stateful change,
since yours doesn't accomplish that.  My suggestion is certainly
consistent with normal io manipulators.  The point is to stream a
bunch of sequences without having to repeat the format part.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com