How to compare two arrays using bis_function?

[f2k sel 164]

I was just trying to compare two arrays and found it quite difficult.

I did find some script to do it but I also noticed that there is a Bis_function.

call BIS_fn_areEqual

I can't seem to get it to function.

[_array1, _array2] call BIS_fn_areEqual] should return true or false.

I've tried using it in an IF statement and var=[arry1,arry2 ect, but the variable only returns "any"

Can anyone work out what's wrong?

Edited August 22, 2009 by F2k Sel

[wamingo 1]

I'm no guru on this subject but what is in the arrays?

ar1 = [1,2,3];
ar2 = [1,2,3];
result = [ar1,ar2] call BIS_fnc_areEqual;  // result = true

just tried in a trigger. (remember the Functions module)

But the arrays need to be identical I think.

for a different kind of dynamic you can look into array subtraction. If the result is empty then each element is in each array

[1,2,3,4] - [1,3] = [2,4]
[1,1,1,2] - [1] = [2]
// 
ar1 = [1,3,7];
ar2 = [7,1,3];
result = ar1 - ar2;
if count result == 0 // should return true

with nested arrays you need to compare each element individually I think, maybe using "select"

Please take all this with a bit of salt, I've not really used this stuff. hope it was some help though.

Edited August 23, 2009 by wamingo

[f2k sel 164]

Thanks I'll take a look later.

[Deadfast 43]

_arrayCompare =
{
private ["_array1", "_array2", "_i", "_return"];

_array1 = _this select 0;
_array2 = _this select 1;

_return = true;
if ( (count _array1) != (count _array2) ) then
{
	_return = false;
}
else
{
	_i = 0;
	while {_i < (count _array1) && _return} do
	{
		if ( (typeName (_array1 select _i)) != (typeName (_array2 select _i)) ) then
		{
			_return = false;
		}
		else
		{
			if (typeName (_array1 select _i) == "ARRAY") then
			{
				if (!([_array1 select _i, _array2 select _i] call _arrayCompare)) then
				{
					_return = false;
				};
			}
			else
			{
				if ((_array1 select _i) != (_array2 select _i)) then
				{
					_return = false;
				};
			};
		};
		_i = _i + 1;
	};
};

_return
};

Parameters are [array1, array2]

Returns true if arrays match, false if not

Works with nested arrays as well.

Example:

_bool = [_array1, _array2] call _arrayCompare;