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How to check for an active Internet connection on iOS or macOS?
...y via closures
let reachability = Reachability()!
reachability.whenReachable = { reachability in
if reachability.connection == .wifi {
print("Reachable via WiFi")
} else {
print("Reachable via Cellular")
}
}
reachability.whenUnreachable = { _ in
print("Not reachabl...
How to iterate through a DataTable
I need to iterate through a DataTable . I have an column there named ImagePath .
4 Answers
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Easiest way to detect Internet connection on iOS?
...through HTTPUrlConnection instantly fail if there is no connection available. This seems like completely sane behavior, and I was surprised to find NSURLConnection in iOS did not emulate it.
...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
How to use android emulator for testing bluetooth application?
...er settings of the virtual machine, Goto serialports -> Port 1 check Enable serial port select a port number
then select port mode as disconnected click ok. now, start virtual
machine. Under Devices -> USB Devices -> you can find your laptop
bluetooth listed. You can simply check t...
What is the appropriate HTTP status code response for a general unsuccessful request (not an error)?
...ul response and serve it to
subsequent clients even when clients may be able to make a successful
request.
I'll leave it to you to decide between 4xx and 5xx, but you should use an error status code.
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Android Studio/Intellij Idea: “Table of Contents” for a class
...I have seen. One thing that has been annoying me though is this lack of "Table of Contents" for a class. I apologize for not knowing exactly what to call it. But what I am referring to is the dropdown menu in eclipse that lists all the methods, interfaces, classes and so on that are in that class fi...
CMake使用教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...或者ctest）、生成当前平台的安装包（make package）、生成源码包（make package_source）、产生Dashboard显示数据并上传等高级功能，只要在CMakeLists.txt中简单配置，就可以完成很多复杂的功能，包括写测试用例。
如果有嵌套目录，子...
Understanding ibeacon distancing
... basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this?
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import module from string variable
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importlib should be avaliable on pypi for < python2.7
– Jeffrey Jose
Aug 19 '12 at 12:12
51
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