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why static variable is allocated when program starts but initialize later?


By : tasker
Date : September 22 2020, 12:00 PM
I hope this helps . Not quite. Static variables are initialised the first time they are encountered, which of course is not necessarily at the start of a function.
code :


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Why program is not allowing to initialize the static final variable?


By : GSD_CEMARR
Date : March 29 2020, 07:55 AM
To fix this issue Final variables allow at most one assignment in the constructor or the initializer block. The reason this does not compile is that Java code analyzer sees two assignments to USER_ID in branches that do not look mutually exclusive to it.
Working around this problem is simple:
code :
static {
    long theId;
    try {
        theId = getUserIdFromEnvironment();
    } catch (IdUnavailableException e) {
        theId = GUEST_USER_ID;
        System.out.println("Logging in as guest");
    }
    USER_ID = theId;
}

Why is the static variable initialized with redeclaration of static variable outside the class? Can't we just initialize


By : user3143479
Date : March 29 2020, 07:55 AM
should help you out It seems that you mix up the declaration and the definition of a variable.
The declaration just tells the compiler a name. So in your case:
code :
class Box
{
    public:
        static int objectCount;
};
int Box::objectCount = 0;

how to initialize static variable before initialize page and before running initstate method in flutter


By : user3069324
Date : March 29 2020, 07:55 AM
it should still fix some issue You should create a function inside your Stateful widget that executes what you want to accomplish and call it inside the InitState function.
This is an example from my Clima app where I fetch data from an API and I put them inside some variables:
code :
//This is an example

@override
  void initState() {
    super.initState();
    updateUI(widget.locationWeather);
  }

  void updateUI(dynamic weatherData) {
    setState(() {
      if (weatherData == null) {
        temperature = 0;
        condition = 'Error';
        message = 'Unable to get location';
        cityName = '';
        return;
      }
      double temp = weatherData['main']['temp'];
      temperature = temp.toInt();
      condition = weatherModel.getWeatherIcon(weatherData['weather'][0]['id']);
      cityName = weatherData['name'];
      message = weatherModel.getMessage(temperature);
    });
  }

Why can't I initialize a static variable by calling a static function in Swift?


By : Khush Preet
Date : March 29 2020, 07:55 AM
it should still fix some issue It is my understanding that as of Xcode 6.3 / Swift 1.2, I can use static variables and methods inside of a class. However, the compiler doesn't like it when I try to initialize a static variable by calling a static function (I get the error 'Use of unresolved identifier getDefaultString' in the example below). Here is a snippet that demonstrates my problem: , This should work:

C++ must define as static constexpr double - cant initialize static non-integral variable inside Class


By : Hunter Mauer
Date : October 10 2020, 02:00 AM
Hope this helps You should call static functions like ClassName::functionName(), in your case :
code :
Vendedor::mostrarTotal();
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