List Equality

I'm hoping this is a quick-and-easy answer.

The following statement:

else if (CurrentUserInterfacePath == ["Home, Hardware"])
{
[Blah blah blah]
}

Is being triggered no matter what CurrentUserInterfacePath is. Yes, I've debugged it.

I haven't scripted in a while due to being busy IRL, so I'm guessing it's some obvious syntax error that I've overlooked.

Thanks in advance.

Neither http://wiki.secondlife.com/wiki/List nor http://wiki.secondlife.com/wiki/LSL_Operators say anything about comparing lists using the "==" operator, but the List category page refers to the user function ListCompare (under the "Extended List Operations" heading) at http://wiki.secondlife.com/wiki/ListCompare, which looks like what you need.

Incidentally, is it possible that your use of ["Home, Hardware"] is meant to refer to a two-element list? If so it should be written ["Home", "Hardware"].

Thanks for the link, I'll check it out.



Yeah, that too. Although it doesn't look like that's the issue.

Found this JIRA post: http://jira.secondlife.com/browse/SVC-113

Looks like the == operator compares the LENGTH of lists, not the contents.

I suppose I can just convert the list to a string and compare that way, but that seems a bit silly.

That ties in with using (my_list != []) as a more efficient verson of llGetListLength. The ListCompare function looks pretty efficient and seems a far neater way to go than converting the lists to strings and then comparing those.

IIRC list find list will only support 8 elements in the find portion, check that first. if so you may need to loop it an account for the offset in that test.

There's no mention of an eight element limit in the wiki entries for llListFindList (the ll function at the heart of ListCompare) and the JIRA search links don't bring anything up.

Might this user function in the wiki be what you need? http://wiki.secondlife.com/wiki/ListCompare

Because list operations are so slow even those in ListCompare (eg; '(a = []) + a') might make it more efficient to test for
llList2CSV(CurrentUserInterfacePath) == "Home, Hardware"
although I agree that it seems a bit silly to have to go that way.

Veering a bit off-topic here, but is there an easy way to compare the execution speed and memory usage of different segments of code?

I may have misremembered the specific function, or it just may not be mentioned. that's why I suggested testing to be sure first. (Portal is mostly written by us, and then mostly by strife I think, who, while talented and prolific, can't catch everything)


yes
this one tests memory size
http://wiki.secondlife.com/wiki/User:Void_Singer/Challenge#Function_Size_Test_Script

and this one tests function speed

(this is almost useless for testing small code segments in mono, probably because of the way execution frames are built in mono)

I had a conglomerate script that would test both together, but I seem to have lost it.

Thanks void, those links will be very useful.

Caveats for llParseList2String() include this "Only the first 8 separators and first 8 spacers that you specify will be used. Any beyond that will be ignored". Is that what you were thinking of Void? (I've got no idea if it applies to llListFindList() as well)

that may be (isn't fuzzy memory fun... not) I did write some multi/reverse find functions with both....