Difference between revisions of "ListUnique"

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== Function: [[list]] ListUnique([[list]] {{LSL Param|lAll }}; ==
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== Function: [[list]] ListUnique([[list]] {{LSL Param|lAll) }}; ==
 
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Given a list of elements, strips out any duplicates in that list, and returns the de-duped list.
 
Given a list of elements, strips out any duplicates in that list, and returns the de-duped list.
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Originated in a November 2004 thread led by Chromal Brodsky in the SL Scripting Forum. http://forums.secondlife.com/showthread.php?t=28137
  
{{LSLC|Examples|ListXUnique}}
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{{LSLC|Examples|ListUnique}}

Revision as of 05:37, 13 July 2008

Function: list ListUnique(list lAll);

Given a list of elements, strips out any duplicates in that list, and returns the de-duped list.

See also: Lists


<lsl> list ListUnique( list lAll ) {

   integer i;
   list lFiltered = llList2List(lAll, 0, 0);
   integer iAll = llGetListLength( lAll );
   for (i = 1; i < iAll; i++) {
       if ( llListFindList(lFiltered, llList2List(lAll, i, i) ) == -1 ) {
           lFiltered += llList2List(lAll, i, i);
       }
   }
   return lFiltered;

}

</lsl>


Example:

list mylist = ListUnique(["A", "A", "B", "C", "C", "B"])

would return the list:

["A", "B", "C"]


Originated in a November 2004 thread led by Chromal Brodsky in the SL Scripting Forum. http://forums.secondlife.com/showthread.php?t=28137