Error: “array index out of range” in multidimensional array

Question

i have declared my array like

var tile = [[Int]]()

and after that i have initialize its value like

for (var index = 0; in         


        

Answer 1

As per comments you know that you are asking for value at index in an empty array. If you want to initialise the array you should try something like this:

for (var index = 0; index < 4; index++)
{
    tile.append([])
    for (var sindex = 0; sindex < 4; sindex++)
    {
        tile[index].append(sindex)

        print("\(index) \(sindex)")

    }
}

Answer 2

As the commentators @C_X & @MartinR say, your array is empty. Here's how to initialise it as you want...

var tile = [[Int]](count:4, repeatedValue: [Int](count: 4, repeatedValue: 0))

for index in 0 ..< 4 {
    for sindex in 0 ..< 4 {
        tile[index][sindex] = 0 // no error here now...
        print("\(index) \(sindex)")
    }
}

...of course, the for loops are now redundant, if you just want zeroes!