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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...QX 是如何支持单集群亿级 MQTT 并发连接的？点击查看详细测试过程 →协议支持Mosiquitto 作为 MQTT Broker 提供了完整的 MQTT 3.1/3.1.1/5.0 协议支持，支持协议规范中的遗嘱消息、保留消息、共享订阅等能力，同时也支持 MQTT over WebSocket...
Taskkill /f doesn't kill a process
When I start up an Experimental instance of VS from VS for debugging and stop debugging (sometimes directly from the parent VS), a zombile devenv.exe process remains running which I am unable to kill. It holds on to many of my dlls.
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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...形参的交集，这个交集就是我们可以自定义的参数，经过测试，发现wParam其实就是SetTimer返回的id，也就是 TimerProc的形参idEvent，于是例子如下：
VOID CALLBACK TimerFunc(HWND hwnd,UINT uMsg,UINT_PTR idEvent,DWORD dwTime)
{
char * buf = (char*)idEv...
Get decimal portion of a number with JavaScript
...o 0.3 this may be acceptable. To me it isn't... Hence, to solve this challenge I'd refrain from using Math.* or % operations.
– Marcel Stör
Apr 2 '14 at 14:04
66
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How to format a Java string with leading zero?
Here is the String, for example:
21 Answers
21
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Datatables - Search Box outside datatable
I'm using DataTables ( datatables.net ) and I would like my search box to be outside of the table (for example in my header div).
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Resource interpreted as stylesheet but transferred with MIME type text/html (seems not related with
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i'd like to start by understanding the problem
Browsers make HTTP requests to servers. The server then makes an HTTP response.
Both requests and responses consist of a bunch of headers and a (sometimes optional) body with some content in it.
If there is...
AWS S3: The bucket you are attempting to access must be addressed using the specified endpoint
I am trying to delete uploaded image files with the AWS-SDK-Core Ruby Gem.
15 Answers
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What does it mean by select 1 from table?
I have seen many queries with something as follows.
15 Answers
15
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BLE协议—广播和扫描 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...数设置成一样。
之所以要这么设计，是为了防止在批量测试或者使用设备时，由于多个设备的同时广播，而形成数据风暴，防止设备之间的干扰。
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