Re: [boost] Interest check: constant input matching manipulator

Subject: Re: [boost] Interest check: constant input matching manipulator
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-04-08 21:35:24

AMDG

Scott McMurray wrote:
> On Wed, Apr 8, 2009 at 16:24, Stewart, Robert <Robert.Stewart_at_[hidden]> wrote:
>   
>> That's a lot of noise and the syntax is non-obvious for the purpose at hand.  I suspect unwarranted compilation overhead, too.  Something simpler seems in order:
>>
>>   #include <boost/something/literal.hpp>
>>   ...
>>   using boost::something::literal;
>>
>>   int a;
>>   std::cin >> literal("a=") >> a;
>>
>>     
>
> Do we need any (new) syntax at all?  What if we just make RValues
> always do that where reasonable?  Then we can spell it add_const if
> actually needed...
>
> In fact, can someone come up with a good use case for needing more
> than just character and string literals?  I feel like anything more
> than that might be better left to spirit/regex/whatever.
>   

You can't overload operator>> for a built in type and a std::istream.

In Christ,
Steven Watanabe