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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展之：RequestMTU是否有上限？ -...
...uestMTU
没反应,是不是因为这个值1024太大了
1024没触发,64触发了
MTU设64不报错,设100报错 128报错.256不报错.
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连上后，调用，没有触发回调？
待调查研究这个函数是否有上限。见这篇帖子《ble蓝牙 RequestMTU 请求没有反...
为什么会提示AppInventor2.exe 不是有效的 Win32 - App Inventor 2 离线版 ...
本帖最后由 lmn2005 于 2025-04-15 18:35 编辑
电脑系统为64位win7，安装AppInventor2后运行，提示C:\AppInventor2\AppInventor2.exe 不是有效的 Win32 应用程序 这是为什么？
https://aka.ms/vs/16/release/vc_redist.x64.exe
装一个运行环境试试，如果还...
What is the difference between encode/decode?
...st as a side note - you can select some pervert encoding, like 'zip', 'base64', 'rot' and some of them will convert from string to string, but I believe the most common case is one that involves UTF-8/UTF-16 and string.
shar...
How to create Windows EventLog source from command line?
... prompt
Microsoft TechNet: Windows Command-Line Reference: Eventcreate
SS64: Windows Command-Line Reference: Eventcreate
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C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...子节点
XmlNodeList childlist=root.ChildNodes;
//判断该节点下是否有子节点
root.HasChildNodes;
//获取同名同级节点集合
XmlNodeList nodelist=xml.SelectNodes("/Root/News");
//生成一个新节点
XmlElement node=xml.CreateElement("News");
//将节点加到指定...
How can I generate UUID in C#
... three Guid parts.
If you are transmitting the bytes (for example, as base64), you can't just use Guid.ToByteArray() and encode it. You'll need to Array.Reverse the first three parts (Data1-3).
I do it this way:
var rfc4122bytes = Convert.FromBase64String("aguidthatIgotonthewire==");
Array.Revers...
What does string::npos mean in this code?
...can not be negative... real meaning is max_index, 18446744073709551615 for 64 bit size_t
– NoSenseEtAl
Sep 4 '14 at 12:33
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Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
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Jonathan LefflerJonathan Leffler
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Blank space at top of UITextView in iOS 10
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Convert from ASCII string encoded in Hex to plain ASCII?
... here's one of the shortest, using only python-provided stuff:
import base64
hex_data ='57696C6C20796F7520636F6E76657274207468697320484558205468696E6720696E746F20415343494920666F72206D653F2E202E202E202E506C656565656173652E2E2E212121'
ascii_string = str(base64.b16decode(hex_data))[2:-1]
print (ascii...