LlList2String

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Summary

Function: string llList2String( list src, integer index );

Returns a string that is at index in src.

• list src List containing the element of interest.
• integer index Index of the element of interest.

index supports negative indexes.
If index describes a location not in src then null string is returned.
If the type of the element at index in src is not a string it is typecast to a string.

Specification

Index Positive Negative
First 0 -length
Last length - 1 -1

Indexes

  • Positive indexes count from the beginning, the first item being indexed as 0, the last as (length - 1).
  • Negative indexes count from the far end, the first item being indexed as -length, the last as -1.

Caveats

  • If index is out of bounds the script continues to execute without an error message.
  • When using this function to typecast a list element to a string it will truncated float based types to 6 decimal places.
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Examples

//This code demonstrates the differences in typecasting in LSL (and demonstrates how to use the llList2* functions).
// Best viewed in Chat History (ctrl-h)
default
{
    state_entry()
    {
        list my_list = ["a", "0xFF", "0xFF.FF", "1.0e3", 1, 2.0, <1,2,3>, <1,2,3,4>, llGetOwner()];
        integer i = 0;
        integer end = llGetListLength(my_list);
        for (; i<end; ++i)
        {
            llOwnerSay("string=" + llList2String(my_list,i)
                        + "\n   integer=" + (string)llList2Integer(my_list,i) + " OR " +(string)((integer)llList2String(my_list,i))
                        + "\n   float=" + (string)llList2Float(my_list,i) + " OR " +(string)((float)llList2String(my_list,i))
                        + "\n   vector=" + (string)llList2Vector(my_list,i) + " OR " +(string)((vector)llList2String(my_list,i))
                        + "\n   rot=" + (string)llList2Rot(my_list,i) + " OR " +(string)((rotation)llList2String(my_list,i))
                        + "\n   key=" + (string)llList2Key(my_list,i) + " OR " +(string)((key)llList2String(my_list,i)) );
        }
    }
}

Notes

  • If you wish to extract a string from a list that you know will contain only a single item (for example if you extract a single entry from a list using llList2List()), then instead of using llList2String(myList, 0) you may wish to considering using the more efficient (string)myList as it will produce the same result for single-entry lists with less memory usage due to eliminating a function-call.
  • To convert a string of hexadecimal notation to integer, call llList2Integer and it will automatically cast the value as decimal integer. To convert that integer back to a string of hexadecimal notation, use a user function like hex.

See Also

Functions

•  llDumpList2String
•  llGetListEntryType
•  llList2Float
•  llList2Integer
•  llList2Key

Articles

•  Negative Index

Deep Notes

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Signature

function string llList2String( list src, integer index );