[Kstars-devel] What's up tonight - Speed issues

[Khudyakov Alexey]

On Пятница 26 июня 2009 20:59:59 Prakash Mohan wrote:
> Hey,
> In the What's up tonight dialog, certain categories take too long to
> load ( >5 or >10 seconds). I've seen this problem earlier when I tried
> to create an "all objects" list for the observation planner where it
> took over 20 seconds to do similar stuff which the WUT does. Any idea
> on what might consume this long a time? (Also I'm using a small
> catalog, I wonder what would happen if use the USNO/Nomad catalog).
> As I see it, in the WUT dialog, we're calling of every component in
> the skyComposite, doing a foreach on the selected category, cast to
> SkyObject if needed and then do a couple of O(1) queries, so, the
> trouble might be due to the usage of "foreach" instead of the
> conventional for loop, or due to some other larger error in
> skyComposite or the casts to SkyObject.
>
You could check for functions that return values rather than refrences. 
Missing '&' could have consequences. 

Why do you want to pull USNO/Nomad to memory? I believe that if someone want 
that faint star from he will find it specifically.