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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
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拓展下载：
UrsAI2UDP.zip
demo下载：
CLOUD_REMOTE_VIDEO_CAR.aia
原作者开发动机
对于一个项目，应该开发一个与 ESP8266（项目）通信的 Android 应用程序。为了轻松开发应用程序，选择...
.NET unique object identifier
...
That may well help, but with a cost - IIRC, using the base object.GetHashCode() needs to allocate a sync block, which isn't free. Nice idea though - +1 from me.
– Jon Skeet
Apr 15 '09 at 9:47
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Calculating width from percent to pixel then minus by pixel in LESS CSS
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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jQuery select by attribute using AND and OR operators
...d = $(this).attr('myid');
return (myId == '1' || myId == '3');
});
DEMO
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Generate table relationship diagram from existing schema (SQL Server) [closed]
...tements you can try reverse snowflakes. You can join at sourceforge or the demo site at http://snowflakejoins.com/.
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Android Json and null values
..."bye","callback string");
or
json.optString("bye");
instead.
In your demo code, the
JSONObject json = new JSONObject("{\"hello\":null}");
json.getString("hello");
this you get is String "null" not null.
your shoud use
if(json.isNull("hello")) {
helloStr = null;
} else {
helloStr...
animating addClass/removeClass with jQuery
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to Append in javascript? [duplicate]
...lt;script>alert("hi");</' + 'script>').appendTo(document.body);
DEMO
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Error Code: 2013. Lost connection to MySQL server during query
...ield to 0 is equivalent to the default parameter (600 seconds). (Windows 7 64-bit Ultimate, MySQL Workbench 5.2.47 CE)
– Franck Dernoncourt
Jun 1 '13 at 21:30
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Cannot find Dumpbin.exe
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With VS 2019, installing MSVC v142 - VS 2019 C++ x64/x86 build tools (v14.25) was enough for me to get dumpbin.exe.
– 0xced
Apr 16 at 6:57
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