目录一：弹性布局（Flex）1. direction设置主轴方向2. mainAxisAlignment设置子 Widget沿着主轴方向的排列方式3. mainAxisSize设置主轴的大小4. crossAxisAlignment设置子 Widget 沿着交叉轴方向的排列方式5. vertic
This question already has answers here: Closed 12 years ago. Possible Duplicate: How do you concatenate the rows of a matrix into a vector in MATLAB?
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