ListXneqY - Second Life Wiki

ListXneqY

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Function: integer ListXneqY(list lx, list ly);

Answers the question: is list X different from list Y?

Returns the number 1 if true, 0 if false

Note: requires also the function ListXnotY .

The opposite function is ListXequY .

See also: Lists

integer ListXneqY(list lx, list ly) {
    if( llList2CSV( ListXnotY(lx,ly) ) == "") return FALSE;
    else return TRUE;
}


Example:

list l1 = ["a","b","c","d"];
list l2 = ["a","1","b","2","c","3"];
 
integer ListXneqY(list lx, list ly) {
    if( llList2CSV( ListXnotY(lx,ly) ) == "") return FALSE;
    else return TRUE;
}
 
list ListXnotY(list lx, list ly) {// return elements in X list that are not in Y list
    list lz = [];
    integer i = 0;
    integer n = llGetListLength(lx);
    for (; i < n; i++)
        if (llListFindList(ly,llList2List(lx,i,i)) == -1)
            lz += llList2List(lx,i,i);
    return lz;
}
 
default{
   state_entry() {
      llSay(0, "Are we different lists? " + (string)ListXneqY(l1,l2))
      //will say in this example: 1 , meaning yes.
   }
}
Posted with the kind permission of Very Keynes, who originated this script June 2007 in the SL scripters forum http://forums-archive.secondlife.com/54/e4/194138/1.html