ListXnotY
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Function: list ListXnotY(list lx, list ly);
Show what x list has that y list is missing.
<lsl> list ListXnotY(list lx, list ly) {// return elements in X list that are not in Y list
list lz = [];
integer x;
for (x = 0; x < llGetListLength(lx); x++) {
if (~llListFindList(ly,llList2List(lx,x,x))) {
;
}
else {
lz = lz + llList2List(lx,x,x);
}
}
return lz;
} </lsl>
Example:
<lsl> list l1 = ["a","b","c","d"]; list l2 = ["a","1","b","2","c","3"];
default{
state_entry() {
llSay(0, "X list has this in it, but Y list doesn't: " + llList2CSV(ListXnotY(l1,l2)) );
//will say: d
}
} </lsl>
Posted with the kind permission of Very Keynes, which originated this script June 2007 in the SL scripters forum http://forums.secondlife.com/showthread.php?t=194138