overriding

Imagine a simple array of structures, say: A = struct('x', {1 2 3}, 'y', {'a' 'b' 'c'}); Asking for a given property for all this array's elements will give something like: >> A.x ans = 1 ans = 2 ans = 3 Now, if I explicitly call the subsref function directly on this array, it only retrieves the first element's property: >> builtin('subsref', A, substruct('.', 'x')) ans = 1 Why? And is there a possibility to call explicitly another built-in method that will retrieve the property for all the array's elements? The subsref method can return it but not as a comma separated list the way you get it

I have th following code: class A{ //Constructor public: A(int count,...){ va_list vl; va_start(vl,count); for(int i=0;i<count;i++) /*Do Something ... */ va_end(vl); } }; class B : public A{ //Constructor should pass on args to parent public: B(int count,...) : A(int count, ????) {} }; How can I do that? Note: I would prefer to have call the constructor in the initialization list and not in the constructor body. But if this is the only way, I am also interested to hear how this works! Thanks You cannot forward on to an ellipsis. The second constructor will have to take a va_list , I think it

I want to get current location using GPS. Here is my scenario. My class definition is: public class UseGps extends Activity implements LocationListener If Í try to override the LocationListener methods like this 1) @Override public void onLocationChanged(Location loc) 2) @Override public void onProviderDisabled(String provider) 3) @Override public void onProviderEnabled(String provider) it is giving me compilation error saying The method onStatusChanged(String, int, Bundle) of type UseGps must override a superclass method remove override. Same for 2) and 3) What is wrong here? Assuming that

I have a superclass, which two methods i want to override. Here's my code: public class MyCustomClass extends SomeSuperClass { protected MyCustomClass(params) { super(params); } @Override public void method1() { super.method1(); /* here goes my code */ } @Override public void method2() { super.method2(); /* here goes my another code */ } I have some constructor, that passes SomeSuperClass object as a parameter, and what i do next: MyCustomClass object; /* now i have object of type SomeSuperClass, but with my own method1() and method2() */ object = (MyCustomClass) MyCustomClass.item(blahblah);

I have an entity in EF named Profile and I would like to add data annotation attributes to the FirstName property of this entity. So, I created a new partial class like so; public partial class Profile : EntityObject { [Required] [Display(Name = "First Name")] [EdmScalarPropertyAttribute(EntityKeyProperty = false, IsNullable = false)] [DataMemberAttribute()] override public global::System.String FirstName { get { return _FirstName; } set { OnFirstNameChanging(value); ReportPropertyChanging("FirstName"); _FirstName = StructuralObject.SetValidValue(value, false); ReportPropertyChanged("FirstName

I am trying to upgrade from Django 1.7.1 to 1.8 on my dev env. I seem to be having an issue with one of my models, I think a core file got upgraded and its messing with my model. I cant seem to figure out what's causing it to die. This is the only error I get when I attempt to run a manage.py test CommandError: System check identified some issues: ERRORS: graphite_alerts.CheckResults: (models.E020) The 'CheckResults.check()' class method is currently overridden by <django.db.models.fields.related.ReverseSingleRelatedObjectDescriptor object at 0x3a76310>. I tried changing the class name and

I have a method, in a class called "PlaceParser" that extends "ModelParser": protected Place parseModel(JSONObject element) ... A Place is a sub class of Model. Should the @Override annotation be added to the above code? As the method has a different return type, does this still count as overriding the base class method with the same name and arguments / does the return type alter the 'signature'? The "ModelParser" method looks like this "ModelT" also extends "Model": protected abstract ModelT parseModel(JSONObject element) throws JSONException; Update @Jon Skeet: The base class is declared