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GestureDetect 手势检测扩展：识别滑动、点击和长按手势 · App Inventor 2 中文网
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How can I time a code segment for testing performance with Pythons timeit?
... can use IPython, it has the magic function %timeit.
%%timeit operates on cells.
In [2]: %timeit cos(3.14)
10000000 loops, best of 3: 160 ns per loop
In [3]: %%timeit
...: cos(3.14)
...: x = 2 + 3
...:
10000000 loops, best of 3: 196 ns per loop
...
GridLayout (not GridView) how to stretch all children evenly
...umn; use a LinearLayout
subview to hold the components in the associated cell group."
Here is a small example that uses LinearLayout subviews. (I used Space Views that takes up unused area and pushes the buttons into desired position.)
<GridLayout
xmlns:android="http://schemas.android.co...
App Inventor 2 软件著作权（软著）申请指南 · App Inventor 2 中文网
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Should I make HTML Anchors with 'name' or 'id'?
...t forget, you can use this not only with spans but with divs or even table cells, and then you have access to the :target pseudo-class on the element. Just watch out not to change the width, like with bold text, cause that moves content around, which is disturbing.
Named anchors - my vote is to avo...
How to write to an existing excel file without overwriting data (using pandas)?
...aFrame.
(default: 'Sheet1')
startrow : upper left cell row to dump data frame.
Per default (startrow=None) calculate the last row
in the existing DF and write to the next row...
truncate_sheet : truncate (remove and recreate) [sheet_na...
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
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IRXmitter红外发射器扩展 · App Inventor 2 中文网
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How do I connect to a MySQL Database in Python?
...u like
cur.execute("SELECT * FROM YOUR_TABLE_NAME")
# print all the first cell of all the rows
for row in cur.fetchall():
print row[0]
db.close()
Of course, there are thousand of possibilities and options; this is a very basic example. You will have to look at the documentation. A good start...
How to use UIScrollView in Storyboard
...bleViewController you can just scroll offscreen in Storyboard (just add 20 cells, and you'll see you can simply scroll), this should be possible with a ScrollViewController too.
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