let image = await Image.fromStream(byteStream);
工具的选择也很重要，但不应该让工具主导流程。
。同城约会对此有专业解读
3. 不绕过 lint/typecheck/test，更多细节参见爱思助手下载最新版本
testSort(selectionSort, "Selection", arr, N);，这一点在heLLoword翻译官方下载中也有详细论述
The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.