Re: [Boost-users] date_time: << operator for time_duration

From: Jeff Garland (jeff_at_[hidden])
Date: 2005-06-15 21:23:29

On Wed, 15 Jun 2005 13:09:53 -0400, Donato Petrino wrote
> Hello,
> 
> one short question regarding the 'operator<<' on time_durations
> (which in turn calls 'duration_put' in time_formatting_streams.hpp):
> 
> 	The stream's filler is changed via the manipulator 'std::setfill'
> 	to zero ('0'), but without setting it back to the one the stream had
> when
> 	entering to this function (in my case blank (' ')). This results in
> 	undesired leading blanks on the subsequent usage of the same stream
> object.
> 
> 	Question: Is it a bug or is it the common way how streams are used
> (which
> 	would mean that is't up to me resetting it to blank again).
> 
> Thank you in advance!

This is a bug in 1.32.  The i/o code has been rewritten for 1.33 and this
problem is fixed.  In addition, the i/o is much more flexible because you can
use format strings to adjust the output however you like with the streaming
operator:

  time_facet* timefacet = new time_facet("%A %B %d %H:%M:%S");
  std::cout.imbue(std::locale(std::locale::classic(), timefacet));
  date d(2005,Apr, 20);
  ptime t1(d, hours(23)+minutes(59)+seconds(59));
  std::cout << t1 << std::endl;
  //output:  Wednesday April 20 23:59:59 

I expect 1.33 will be released in the next few weeks.

Jeff