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How to check whether a file or directory exists?
I want to check the existence of file ./conf/app.ini in my Go code,
but I can't find a good way to do that.
5 Answers
...
Responding with a JSON object in Node.js (converting object/array to JSON string)
...xpress:
function random(response) {
console.log("response.json sets the appropriate header and performs JSON.stringify");
response.json({
anObject: { item1: "item1val", item2: "item2val" },
anArray: ["item1", "item2"],
another: "item"
});
}
Alternatively:
function random(res...
Detect Retina Display
...mode -- even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad: it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator.
I test for the -displayLinkWithTarget:selector: method on the main screen which exists ...
How to write log to file
...r me:
f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work for log.SetOutput, because i...
An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode
...
This shouldn't really affect your app's security. It just turns off the warning that says you have some configuration values that won't be used.
– David
Jan 27 '12 at 22:44
...
How can I enable or disable the GPS programmatically on Android?
....setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
private void turnGPSOff(){
String provider = Settings.Secure.getStr...
Test method is inconclusive: Test wasn't run. Error?
...anyone I fixed my instance of this error by noticing a corrupt entry in my App.Config due to a missing nuget package in the test project.
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Can I use assert on Android devices?
I want to use the Assert keyword in my android apps to destroy my app in some cases on the emulator, or my device during testing. Is this possible?
...
When and why should I use fragments in Android applications? [duplicate]
I often need the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a th...
iPhone Data Usage Tracking/Monitoring
...o different functions, voicemail, general networking interface.
I read in Apple forum that :
The OS does not keep network statistics on a process-by-process basis. As such, there's no exact solution to this problem. You can, however, get network statistics for each network interface.
In general en...