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Fragment onResume() & onPause() is not called on backstack
...Pause() method of current Fragment and onResume() of new Fragment to be called. Well it is not happening.
18 Answers
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How to add a Timeout to Console.ReadLine()?
...eoutException("User did not provide input within the timelimit.");
}
}
Calling is, of course, very easy:
try {
Console.WriteLine("Please enter your name within the next 5 seconds.");
string name = Reader.ReadLine(5000);
Console.WriteLine("Hello, {0}!", name);
} catch (TimeoutException) {
...
Predicate in Java
...gher-order function
Predicate allows Iterables.filter to serve as what is called a higher-order function. On its own, this offers many advantages. Take the List<Integer> numbers example above. Suppose we want to test if all numbers are positive. We can write something like this:
static boole...
When to use virtual destructors?
... destructor or the
behavior is undefined.
In most implementations, the call to the destructor will be resolved like any non-virtual code, meaning that the destructor of the base class will be called but not the one of the derived class, resulting in a resources leak.
To sum up, always make base...
Which is best way to define constants in android, either static class, interface or xml resource?
... that I might need to use in my XML or java code. On the other hand, I typically use static final constants for values that will only be used by my java code and are specific to my implementation.
Also note that it is possible to load XML resources at runtime depending on the device's current confi...
Elasticsearch query to return all records
...n link above suggests.
EDIT: scan Deprecated in 2.1.0.
scan does not provide any benefits over a regular scroll request sorted by _doc. link to elastic docs (spotted by @christophe-roussy)
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SQLite select where empty?
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length(some_column) should be avoided, since this may calculate the length on the fly - AFAIK current SQLite does for columns with text affinity. Other than that, you are at the mercy of the optimizer - though I would expect them to be identical. You could v...
How to set session timeout in web.config
...e.
The timeout attribute specifies the number of minutes a session can be idle before it is abandoned. The default value for this attribute is 20.
By assigning a value of 1 to this attribute, you've set the session to be abandoned in 1 minute after its idle.
To test this, create a simple aspx pag...
How to call a JavaScript function from PHP?
How to call a JavaScript function from PHP?
10 Answers
10
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Does delete on a pointer to a subclass call the base class destructor?
...located on the heap. If it was allocated on the stack this happens automatically (i.e. when it goes out of scope; see RAII). If it is a member of a class (not a pointer, but a full member), then this will happen when the containing object is destroyed.
class A
{
char *someHeapMemory;
public:
...