Re: [Boost-users] Date_time library question

From: Bart (bartmann.nsd_at_[hidden])
Date: 2005-09-16 18:36:12

"Michal Lijowski" <michal_at_[hidden]> wrote in message 
news:1126883517.24859.2.camel_at_ml-cvu.wustl.edu...
>I just started with date_time library using boost-1.33.0-3 on FC4 and
> gcc 4.0.1 20050727.
>
> It is rpm version downloaded from
> http://download.fedora.redhat.com/pub/fedora/linux/core/development/i386/Fedora/RPMS.
>
> I copied some lines of code from boost_date_time.pdf to get familiar
> with capabilities of this library and I encountered some problems.
>
> Here is a modified code taken from page 3 of the manual

...snip...

>
> My question is why d and t0 are not-a-date-time?
> Is this expected?
>

Yes, this is expected. The default constructors for date & ptime initialize 
to not_a_date_time.

> Also the line
>
> ptime t1(d3, hours(5)+nanosec(100)); //date + time of day offset
>
> compiles with error: 'nanosec' was not declared in this scope
>

date_time can be compiled with either microsecond resolution or nanosecond 
resolution. If microsecond resolution (the default) was used, the nanosec 
code won't be available.

To enable nanosecond resolution, simply define 
BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG.

Bart