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App Inventor 2 扩展资源汇总 - 社区扩展与工具合集 · App Inventor 2 中文网
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说明
KevinKun扩展站
https://kevinkun.cn/
CompCreator、ExcelUtil、LeanDB等
MIT社区扩展
https://community.appinventor.mit.edu/
官方社区共享
PuraVidaApps
https://puravidaapps.com/
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How to create a self-signed certificate for a domain name for development?
...All kudos for this solution to Mike O'Brien for his excellent blog post at http://www.mikeobrien.net/blog/creating-self-signed-wildcard
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GestureDetector 手势检测拓展：识别向上/向下/向右/向左滑动和双击等手势...
...ity.kodular.io/t/f ... d-doubleclick/94542
已整理：https://www.fun123.cn/reference/ ... /gesturedetect.htmlhttps://www.fun123.cn/reference/other/extensionsMultitouch.html
https://www.fun123.cn/reference/other/extensionsRotation.html
待一起分析、整理。
Knight's Shortest Path on Chessboard
... .....
And the shortest path of two points in a graph can be found using http://en.wikipedia.org/wiki/Dijkstra's_algorithm
Pseudo-code from wikipedia-page:
function Dijkstra(Graph, source):
for each vertex v in Graph: // Initializations
dist[v] := infinity // Un...
Android: How to bind spinner to custom object list?
...l
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="14sp"
android:textColor="#FFFFFF"
android:sp...
Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...器控件的navigate方法的地址参数：
Variant url = new Variant("http://www.blogjava.net");
那么我们怎么才能得到Active X控件的方法的ID，还有它需要哪些参数呢？还是要借助前面提到的OleView.exe工具，如下图：
可以看到，Navigate方法...
Why prefer two's complement over sign-and-magnitude for signed numbers?
...nd just make the most significant term negative.
Taking an 8-bit value a7 a6 a5 a4 a3 a2 a1 a0
The usual unsigned binary interpretation is:
27*a7 + 26*a6 + 25*a5 + 24*a4 + 23*a3 + 22*a2 + 21*a1 + 20*a0
11111111 = 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1 = 255
The two's complement interpretation is:
-27...
Is either GET or POST more secure than the other?
When comparing an HTTP GET to an HTTP POST, what are the differences from a security perspective? Is one of the choices inherently more secure than the other? If so, why?
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Embed YouTube video - Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...t.
<iframe width="420" height="315" src="https://www.youtube.com/embed/A6XUVjK9W4o" frameborder="0" allowfullscreen></iframe>
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How to change plot background color?
...e ‘T10’ categorical palette (which is the default color cycle);
a “CN” color spec, i.e. 'C' followed by a single digit, which is an index into the default property cycle (matplotlib.rcParams['axes.prop_cycle']); the indexing occurs at artist creation time and defaults to black if the cycle...