Re: [boost] date_time request for addition

From: Jeff Garland (jeff_at_[hidden])
Date: 2004-11-22 15:39:27

On Mon, 22 Nov 2004 19:09:38 +0100, Pavol Droba wrote
> Oh, sorry, I did mean time_duration. I will give an example.
> Imagine, that you have time_duration that spans over multiple years. 
> Internal ticks_ value is quite large number.
> 
> Now lets's say it is 1000000 ... I'd like to multily it by 0.55. It 
> will be nice integer after the operation. But there is no other 
> reasonable way to do if otherwise.
> 
> Just in case you wondering what can be use case for such an 
> operation, imagine a graph where x-axis represents a timeline 
> between two timestamps. If you want to draw a grid, you will need to 
> multiply the time difference by 0.1 0.2 0.3 and etc.

Actually, I think there is an easier way.  I'd calculate the difference 
between the 2 timestamps (divided by the number of divisions) to get the 
the 'step' of the grid.  Then I'd create time_iterator with the calculated 
step to generate the values of the grid.  If you haven't used the 
time_iterator you might have a look at:

http://www.boost.org/doc/html/date_time/posix_time.html#date_time.posix_time.
time_iterators

Jeff