29 lines
765 B
Swift
29 lines
765 B
Swift
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public struct Array2d<T> {
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public let width: Int
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public let height: Int
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private(set) public var data: [T]
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public init(initial: T, width: Int, height: Int) {
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precondition(width > 0 && height > 0)
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self.width = width
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self.height = height
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data = Array(repeating: initial, count: width * height)
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}
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public subscript(pos: (Int, Int)) -> T {
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get {
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let (x, y) = pos
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precondition(0..<width ~= x)
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precondition(0..<height ~= y)
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return data[x + y * width]
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}
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set(newValue) {
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let (x, y) = pos
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precondition(0..<width ~= x)
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precondition(0..<height ~= y)
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data[x + y * width] = newValue
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}
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}
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}
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