Re: [boost] [Review] Quantitative Units library review begins today March 26

From: John Maddock (john_at_[hidden])
Date: 2007-03-28 13:54:22

Steven Watanabe wrote:
>> The scope should not include any facilities for input and output.  It
>> should also not prevent such support however.  (Input and output of
>> units and measures can be handled by extending C++ locales with new
>> facets.  C++ locales already deal with I/O of time and money.  More
>> about internalization and localization below.)
>>
> Input is definitely beyond the scope of the library.  We have
> implemented primitive output.... On further thought, we should
> probably just have
> an output operator for quantity that prints the value_type then the
> unit and leave unit output alone.

That sounds sensible: I can imagine wanting to just log values and having a 
default << operator is a big help.  Users can provide more specialised << 
operators for specific units if that what they want.

Just my rather uninformed 2c....

Regards, John.