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How to get error message when ifstream open fails
...m call that fails update the errno value.
Thus, you can have more information about what happens when a ifstream open fails by using something like :
cerr << "Error: " << strerror(errno);
However, since every system call updates the global errno value, you may have issues in a mult...
iOS: how to perform a HTTP POST request?
I'm approaching iOS development and I'd like to have one of my first applications to perform a HTTP POST request.
7 Answers...
How to use NSURLConnection to connect with SSL for an untrusted cert?
...ed API for accomplishing this! Add something like this to your NSURLConnection delegate:
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticatio...
JavaScript: How to find out if the user browser is Chrome?
I need some function returning a boolean value to check if the browser is Chrome .
13 Answers
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
... App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制
1、硬件接线（特别注意：VCC 3.3v 或 5v 请参阅说明书，不要弄错以免烧坏硬件）
2、串口工具测试
什么是串口工具？
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Retrieve version from maven pom.xml in code
What is the simplest way to retrieve version number from maven's pom.xml in code, i.e., programatically?
11 Answers
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UITextField text change event
...ield control something like this:
// Add a "textFieldDidChange" notification method to the text field control.
In Objective-C:
[textField addTarget:self
action:@selector(textFieldDidChange:)
forControlEvents:UIControlEventEditingChanged];
In Swift:
textField.addTarget(sel...
UITableView backgroundColor always gray on iPad
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yes, I tried the above solution and it worked for me. Can anyone tell me what is this issue actually. Why when we run the app, it is greyed out?
– Naveen
May 16 '11 at 11:43
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How to create local notifications?
How can I setup local notifications so that at the time I set, my app generates a notification/alert with a customized message?
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iPhone UIView Animation Best Practice
What is considered best practice for animating view transitions on the iPhone?
8 Answers
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