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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...广播方式的报文有4种，分别为可连接的非定向广播（ADV_IND）、可连接的定向广播（ADV_DIRECT_IND）、可扫描非定向广播（ADV_SCAN_IND）、不可连接的非定向广播（ADV_NONCONN_IND）
4种广播的使用场景各不相同
可连接的非定向广播（ADV...
Razor view engine, how to enter preprocessor(#if debug)
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This is built in to HttpContext:
@if (HttpContext.Current.IsDebuggingEnabled)
{
// Means that debug="true" in Web.config
}
IMO, this makes more sense than conditional compilation for views and comes in handy for some testing scenarios. (S...
TypeError: 'module' object is not callable
...\Python27\lib\socket.pyc'>
>>> socket.socket
<class 'socket._socketobject'>
>>>
>>> from socket import socket
>>> socket
<class 'socket._socketobject'>
This is what the error message means:
It says module object is not callable, because your code ...
How to count certain elements in array?
...s most elegant. E.g. for me, making a function call per element to just to compare it to a value is not elegant.
– Felix Kling
May 25 '11 at 8:33
...
PostgreSQL - Rename database
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How can I remove a flag in C?
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Real life example, when to use OUTER / CROSS APPLY in SQL
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Extract value of attribute node via XPath
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you can select name attribute of all child nodes in one go.
name="Child_2"
name="Child_4"
name="Child_1"
name="Child_3"
name="Child_1"
name="Child_2"
name="Child_4"
name="Child_3"
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impro...
Android studio: new project vs new module
...s="false" />
<orderEntry type="library" exported="" name="google-http-client-android-1.22.0" level="project" />
<orderEntry type="library" exported="" name="firebase-analytics-10.2.0" level="project" />
<orderEntry type="library" exported="" name="firebase-core-10.2.0" ...
Check whether or not the current thread is the main thread
...
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