i[]@List   = {1,8,8,2,7,3,8,4,8,6,7,1,1};

int Count, Count_A;

for(Count = 0; Count < len(i[]@List); Count++)
    {
    for(Count_A = 0; Count_A < len(i[]@List); Count_A++)
        {
        if( (i[]@List[Count] == i[]@List[Count_A]) && (Count != Count_A) )
            {
            removeindex(i@List, Count_A);
            }
        }
    }

myarray = [1, 2, 3, 1, 2, 5, 6, 7, 8]
list(set(myarray))

/////////////////
// VEX Function: unique values of array

function int[] fn_arrayuniqueval (int arr[])
{
   int tmp[] = {}; 
   foreach(int src; arr)
   {
        int i =0;
        
        foreach(int itm; tmp) if (src == itm) i++ ;
        
        if (i == 0) append(tmp, src);            
    
   }
   
   return arr = tmp;
}


/////////////////
// Custom Code

i[]@List   = {1,8,8,2,7,3,8,4,8,6,7,1,1};

@List = fn_arrayuniqueval(@List);

function int [ ] uniqueelements ( int arr [ ] )
{
    int result [ ] = array ( );
    foreach ( int i; arr )
        if ( find ( result, i ) < 0 )
            append ( result, i );
            
    return result;
}

int arr [ ] = { 0, 4, 4, 5, 6, 7, 5, 6, 5, 5 };
i[]@result = uniqueelements ( arr );