# ListXneqY

 LSL Portal

## 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 .

```integer ListXneqY(list lx, list ly)
{
if(lx == ly)
return !(ListXnotY(lx,ly) == []);
return TRUE;
}
```

Example:

```list l1 = ["a","b","c","d", 1,2];
list l2 = ["a",1,"b",2,"c",3,"d"];

integer ListXneqY(list lx, list ly)
{
if(lx == ly)
return !(ListXnotY(lx,ly) == []);
return FALSE;
}

list ListXnotY(list lx, list ly)
{// return elements in X list that are not in Y list
list lz;
integer n = llGetListLength(lx);
while(n--)
if ( !~llListFindList(ly,llList2List(lx,n,n)) )
lz += llList2List(lx,n,n);
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