[sldev] LLSD??

[Kelly Linden]

Sorry, obvious correction needed: An LLSD map is a
std::map<std::string,LLSD>

On Wed, Nov 4, 2009 at 7:18 AM, Kelly Linden <kelly at lindenlab.com> wrote:

> LLSD has two container classes, maps and arrays.  The LLSD map is a
> std::vector<std::string,LLSD>, while the LLSD array is a std::vector<LLSD>.
> These are both pretty much standard STL, wrapped to be LLSD based.
>
> LLSD my_array = LLSD::emptyArray();
> my_array.append(5);
> std::cout << my_array[0] << std::endl;
>
> You need to walk an array to see if an element is in it, there are some STL
> helpers to do this in a single line but I don't know them off the top of my
> head.
>
> Since LLSD arrays are STL vectors and vectors are magic (resizing) arrays
> and arrays are contiguous blocks of memory ... deleting is kind of a
> complicated question.  I think .erase does what you want but it can be
> expensive since all elements after the one being deleted need to be moved.
> Here is a result from google that talks about ways to more efficiently
> remove lots of items:
>
>
> http://www.gamedev.net/community/forums/topic.asp?topic_id=430548&whichpage=1&#2863448
>
> I hope this helps!  I didn't go into maps since you asked about lists and
> arrays are closer to a list than a map is. :)
>
>  - Kelly
>
>
> On Tue, Nov 3, 2009 at 10:51 PM, malachi <malachi at tamzap.com> wrote:
>
>> am curious if anyone can point me in the right directions. and hopefully
>> shine some light on the functions that are used to work with LLSD
>> elements.
>>
>> specifically how to maintain LLSD lists. how to add to a list and remove
>> items from the list as well as how to test to see if an LLSD element
>> contains an item.
>>
>> many thanks in advance.
>>
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