listCompare
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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
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
Implementation for LSO or MONO
integer ListCompare(list a, list b)
{
if (a != b) return FALSE; // Note: This is comparing list lengths only
// The next line is only needed if compiling with LSO
if (a == []) return TRUE; // both lists are empty (as both lists are the same length)
return !llListFindList(a, b);
// As both lists are the same length, llListFindList() can only return 0 or -1
// Which we return as TRUE or FALSE respectively
}