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Easiest way to flip a boolean value?
... {
val = !val;
}
}
class KeyFactory {
public KeyObj getKeyObj(int param) {
switch(param) {
case VK_F11:
return new VK_F11();
case VK_F12:
return new VK_F12();
}
throw new KeyNotFoundException("Key " + param + " was not found!")...
How to get a list of installed android applications and pick one to run
...he code to get the list of activities/applications installed on Android :
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities( mainIntent, 0);
You will g...
Can inner classes access private variables?
...rivate:
static const char* const MYCONST;
Inner i;
int var;
};
const char* const Outer::MYCONST = "myconst";
int main()
{
Outer o1;
Outer o2(o1);
o1.func();
o2.func();
}
...
Are arrays passed by value or passed by reference in Java? [duplicate]
...reference will affect the original array..
But changing the reference to point to a new array will not change the existing reference in original method..
See this post..
Is Java "pass-by-reference" or "pass-by-value"?
See this working example: -
public static void changeContent(int[] arr) {
...
Swift how to sort array of custom objects by property value
...mStringConvertible, Comparable {
let fileName: String
let fileID: Int
var description: String { return "ImageFile with ID: \(fileID)" }
init(fileName: String, fileID: Int) {
self.fileName = fileName
self.fileID = fileID
}
static func ==(lhs: ImageFile, rhs:...
What happens when there's insufficient memory to throw an OutOfMemoryError?
...ate static void test (OutOfMemoryError o) {
try {
for (int n = 1; true; n += n) {
int[] foo = new int[n];
}
} catch (OutOfMemoryError e) {
if (e == o)
System.out.println("Got the same OutOfMemoryError twice: " + e);
...
Nullable type issue with ?: Conditional Operator
...nch of times already. The compiler is telling you that it doesn't know how convert null into a DateTime.
The solution is simple:
DateTime? foo;
foo = true ? (DateTime?)null : new DateTime(0);
Note that Nullable<DateTime> can be written DateTime? which will save you a bunch of typing.
...
How to determine device screen size category (small, normal, large, xlarge) using code?
...playMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int density = metrics.densityDpi;
if (density == DisplayMetrics.DENSITY_HIGH) {
Toast.makeText(this, "DENSITY_HIGH... Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
else if (density == DisplayMetric...
How can I link to a specific glibc version?
...mbol versioning. If you are curious, the symbol versioning implementation introduced in glibc 2.1 is described here and is an extension of Sun's symbol versioning scheme described here.
One option is to statically link your binary. This is probably the easiest option.
You could also build your b...
How do I remove code duplication between similar const and non-const member functions?
...t's say I have the following class X where I want to return access to an internal member:
19 Answers
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