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

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-09-21 01:08:46

Reece Dunn wrote:

> Vladimir Prus wrote:
>>There are some things I don't like. First, as many mentioned, the naming
>>is not optimal.
>>[snip]
>>or maybe even
>>
>>   ("[" + io(v)/"," + "]")
>>
>>for nested formats, something like
>>
>>   ("["
>>       + io::format(
>>          "(" + io::format()/":" + ")"
>>         )/","
>>       +
>>     "]"
>>    )
>>
>>These are just ideas, though.
> 
> In my development version, I now have this working! That is, you can do:
> 
>    std::cout << io::object
>                 (
>                    std::make_pair( 'a', 5 ),
>                    "{ " + fmt::pair()/" == " + " }"
>                 ) << '\n'; // output: { a == 5 }

Great. I wonder what others think? Personally, I really like the / operator.
Probably that's because I've borrowed the idea from one parser generator
which allows to write:

    (literal / "," )

to mean a list of literals separated by ",". The opening and closing braces
look less clear for me now. Maybe, we can use

   fmt::pair("{", "}")/" == "

or

   fmt::braces("{", "}") + fmt::pair()/" == "

But I'm really really not sure.

- Volodya