Re: [perl-win32-gui-users] GUI_Constants / GUI.pm error

[Jeremy W. <jez...@ho...>]

Hi,

Interesting discussion on many levels. Impressive work. My 2 cents.

For an unrelated problem I did some research yesterday about when to use a 
hashing algorithm verses a liner search or a binary search. Basically, I 
have a list of strings - some times the list is small (less than 5 items) 
and some time is it is longer (20 items plus [could be hundreds]). I'm 
currently using perls hashing functions via XS and as this list is used 
often I wondered if using perls hashing was the way to go. An interesting 
link:

http://en.wikipedia.org/wiki/Hash_table

"The optimum performance point varies from system to system; for example, a 
trial on Parrot shows that its hash tables outperform linear search in all 
but the most trivial cases (one to three entries)."

Other than testing different approaches there wasn't a clear answer. So I 
left the code as it was:)

>With the following conclusions:
>1. In all cases the new algorithm is faster. This differs
>    from the results at work in which the Minimum test showed
>    that the existing algorithm was faster.

This is not meant to be a criticism- so please don't take it as such - but 
I'm not convinced that it's worth speeding up this area of Win32::GUI. Even 
if this algorithm was several orders of magnitude faster it wouldn't make 
that much difference (if at all) to a running Win32::GUI programme. When you 
first mentioned this I did some analysis on how often this function is 
called and when, and I was surprised at the conclusion. Even for a large 
Win32::GUI app, we're only talking several hundred calls, and mostly when 
the app starts. Now this usage profile could just have been my app - so I 
could be wrong:)

Cheers,

jez.