Just a little shortcut issue.
let history = 5
var gradeTimeline = [Int](count:history*12, repeatedValue:0)
will init a one-dimenstional array. Is there a way to do that for a 2-dimensional array too? Long form would be:
var gradesTimeline = [[Int]]()
for i in 0...10 { gradesTimeline.append(gradeTimeline) }
Try:
var gradesTimeline = (0..<10).map { _ in [Int](count:12*history, repeatedValue:0) }
But, because of the value semantics of Array you can also do:
var gradesTimeline = [[Int]](count:2, repeatedValue:([Int](count:3, repeatedValue:0)))
which results in
gradesTimeline: [[Int]] = 2 values {
[0] = 3 values {
[0] = 0
[1] = 0
[2] = 0
}
[1] = 3 values {
[0] = 0
[1] = 0
[2] = 0
}
}
18> gradesTimeline[0][0]=10
19> gradesTimeline[1][2]=20
20> gradesTimeline
$R4: [[Int]] = 2 values {
[0] = 3 values {
[0] = 10
[1] = 0
[2] = 0
}
[1] = 3 values {
[0] = 0
[1] = 0
[2] = 20
}
}
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