Editor → Canvas → Automatically Refresh Canvas OFF
You can turn off the auto-compile feature for previews/canvas'. When having a SwiftUI View open in the editor go to the Editor -> Canvas -> Automatically Refresh Canvas.
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転置行列(てんちぎょうれつ、英: transpose [of a matrix], transposed matrix)とは、m 行 n 列の行列 A に対して A の (i, j) 要素と (j, i) 要素を入れ替えてできる n 行 m 列の行列のことである。転置行列は tA, AT, A⊤, Atr, A′ などと示される。行列の転置行列を与える操作のことを転置(てんち、英: transpose)といい、「A を転置する」などと表現する
functransposed2()->[[Element.Element]]{let cols =0..<(self.first?.count ??0)let rows =0..<self.count
return cols.map { col in
rows.map { row inself[row][col]}}}
すぐに、return から始めたいので、
最初の let を省略。
functransposed3()->[[Element.Element]]{return(0..<(first?.count ??0)).map { col in(0..< count).map { row inself[row][col]}}}
ここまででいいか。
まとめ
まとめておきます。
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