ios - Swift:将 [[[CGFloat]]] 合并到 [[CGFloat]] 与额外数据的正确方法是什么

Question

我有一个像 CGFloat 数组

[[[1,2],[2,3]],[[6,1],[5,6]],[[6,1],[11,6],[21,3]]]

不，我想合并子数组并在每个子数组中添加数组数据，如

[[1,2],[2,3],[9999,9999],[6,1],[5,6],[9999,9999],[6,1],[11,6],[21,3]]

现在我可以使用循环并在其中运行beforearray + array[i] + [9999,9999]来实现功能，但我想知道最好的办法

Answer 1

你可以这样做:

let foo = [[[1,2],[2,3]],[[6,1],[5,6]],[[6,1],[11,6],[21,3]]]

let bar = foo.joinWithSeparator([[9999,9999]]).map({$0})

print(bar)

// [[1, 2], [2, 3], [9999, 9999], [6, 1], [5, 6], [9999, 9999], [6, 1], [11, 6], [21, 3]]

joinWithSeparator returns a view, whose elements are the result of interposing a given separator between the elements of the sequence self.