LlListReplaceList - Second Life Wiki

LlListReplaceList

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Function: list llListReplaceList( list dest, list src, integer start, integer end );

296 Function ID
0.0 Delay
10.0 Energy

Returns a list that is dest with start through end removed and src inserted at start.

• list dest
• list src
• integer start start index
• integer end end index


start & end support negative indexes.

Specification

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

Mentally first translate any negative indexes into positive indexes

  • If start <= end then the range operated on starts at start and ends at end. [start, end]
  • If start > end then the range operated on starts at 0 and goes to end and then starts again at start and goes to -1. [0, end] + [start, -1]

Positive indexes past the length (after the last index), or negative indexes past the beginning (before the first index) are valid. The effects are predictable, the entries are treated as if they were there but were removed just before output.

See negative indexes for more information.

If start is past the end of dest, then src is appended to dest, it will not add null entries. To avoid this, create empty elements in the list first. A similar outcome occurs when using negative indexes.

Caveats

  • Just calling the function will not update the variable. You must store it.
• Bad: llListReplaceList(a, ["c"], 2, 2)
• Good: a = llListReplaceList(a, ["c"], 2, 2)

Examples

 
default
{
    state_entry()
    {
        list a = ["a", "b", "e", "d"];
        list b = llListReplaceList(a, ["c"], 2, 2);//replace the range starting and ending at index 2 with ["c"] and store it into b
 
        llOwnerSay("\""+llList2CSV(a) + ""\""  ->  "\""" + llList2CSV(b)+"\"");//display the change
        //Will say: "a, b, e, d"  ->  "a, b, c, d"
    }
}
 

See Also

Functions

• llDeleteSubList
• llListInsertList
• llList2List

Articles

•  Negative Index