CircularBufferInit.swift

// 1.
class CircularBuffer<T> {
    
    var bufferMaxSize: Int
    var size = 0
    // 2.
    var elements = Array<T?>(repeating: nil, count: 8)

    // 3.
    init(maxSize: Int) {
        self.bufferMaxSize = maxSize
        self.elements = Array(repeating: nil, count: self.bufferMaxSize)
    }
    
    // 4.
    convenience init() {
        self.init(maxSize: 8)
    }
}