listCompare

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/LSL

ListCompare

ListCompare

Summary

Function: integer ListCompare( list a, list b );

Efficiently compares two lists for equality (same contents in the same order).
Returns an integer TRUE if the lists are equal, FALSE if not.

• list	a	–	The first list to compare.
• list	b	–	The second list to compare.

Examples

<lsl>integer r = ListCompare([1, 2.0, "3"], [1, 2.0, "3"]); // Returns TRUE integer s = ListCompare([1, 2.0, 3], [1, 2.0, "3"]); // Returns FALSE

integer t = ListCompare([], [1, 2.0, "3"]); // Returns FALSE</lsl>

Implementation for LSO

<lsl>integer ListCompare(list a, list b) {

   integer aL = a != [];
   if (aL != (b != [])) return 0;
   if ((aL == 0) && (b == [])) return 1;
   
   return !llListFindList((a = []) + a, (b = []) + b);

}</lsl>

Implementation for MONO

<lsl> integer ListCompare(list a, list b) {

   if (a != b)        return FALSE;    // Note: This is comparing list lengths only
   return !llListFindList(a, b);

} </lsl>