Constructors don't have a return type, so it's not possible to use return codes. The best way to signal constructor failure is therefore to throw an exception. If you don't have the option of using exceptions, the "least bad" work-around is to put the object into a "zombie" state by setting an internal status bit so the object acts sort of like it's dead even though it is technically still alive. The idea of a "zombie" object has a lot of down-side.

The C++ rule is that you must never throw an exception from a destructor that is being called during the "stack unwinding" process of another exception. For example, if someone says throw Foo(), the stack will be unwound so all the stack frames between the throw Foo() and the } catch (Foo e) { will get popped. This is called stack unwinding. During stack unwinding, all the local objects in all those stack frames are destructed. See similar questions...

In object-oriented programming, an object's constructor is responsible for initializing the object completely at creation time. The constructor receives the list of options passed to the snit::type command's create method and can then do whatever it likes. That might include computing instance variable values, reading data from files, creating other objects, updating type and instance variables, and so forth. See similar questions...

The Polynomial(int d, double *coefs) constructor is invoked when an object of type Polynomial is defined using the appropriate arguments. For example, double co[] = { 1.2, 3.4, 5.6 }; Polynomial p(2, co); constructs p to represent 5.6x2 + 3.4 x + 1.2. See similar questions...

The example above demonstrates how to overload functions in Ch. For handling C++ constructors with polymorphism, please check Ch User's Guide sections about Variable Number Arguments in Functions and Polymorphism for member functions and contructors. See similar questions...

A type constructor is a body of code that initializes the type as a whole, rather like a C++ static initializer. The body of a type constructor is executed once when the type is defined, and never again. See similar questions...

A constructor is defined by using the constructor statement in the type definition. Suppose that it's desired to keep a list of all pedigreed dogs. The list can be maintained in a type variable and retrieved by a type method. Whenever a dog is created, it can add itself to the list--provided that it's registered with the American Kennel Club. See similar questions...

Can you explain the result of the following example? Oh, my! class Base { public boolean foo(Base b) { return true; } } class Sub extends Base { public boolean foo(Sub s) { return false; } } public class Test { public static void main(String argv[]) { Base bb = new Base(); Base bs = new Sub(); Sub ss = new Sub(); System.out.println(bb.foo(bb)); //true System.out.println(bs.foo(bs)); //true ??? System.out.println(bs.foo(ss)); //true ??? System.out.println(bs.foo(bb)); //true ??? System.out. See similar questions...

Call your local health department. This is the first thing you should do. Health department staff members have the expertise to assess your situation quickly and offer advice on how to cure the problem. Have your septic tank pumped. Frequently, this will help the problem temporarily, especially when it is combined with drastic water conservation. The empty tank can hold several days of waste. See similar questions...

Yes, but it's generally not a good idea. The mechanics of object construction in .NET are quite different from C++, and this affects virtual method calls in constructors. C++ constructs objects from base to derived, so when the base constructor is executing the object is effectively a base object, and virtual method calls are routed to the base class implementation. By contrast, in . See similar questions...

When you have a number of constructors in a class you can call them using this() in a similar way to the superclass constructor super(). For instance, if you have a "good citizen" constructor that takes a String and a boolean, and a shorthand version that only takes a String, you may pass a default value to the two argument constructor, like so: See similar questions...

You have 48 hours in which to complete your download. If you fail to download within this time, you can click the 'Request Additional Download' link on your purchase receipt email and we will authorise an additional download. If you still have problems, please contact us and we will endeavour to rectify the problem as quickly as possible. See similar questions...

If the damage occurs during normal use, it is likely that it is covered under the SMARTdesks warranty. Contact the service department using the Fix-It Form and use the parts list in the Assembly Instructions to note the affected part. We will get you a replacement as soon as we can. Note that certain options, accessories and seating may be covered under separate manufacturers’ warranty. See similar questions...

Officer from the Division will contact you. They will advise you of the result and try to discover the reason for the failure, giving any advice to try to ensure the failure is not repeated. Depending on the seriousness of the failure, the Officer may decide to resample (informally or formally) or take other enforcement action if appropriate. See similar questions...

Make sure all switches are in the on position. This includes the emergency switch at the top of the stairs and there may also be a work switch on your heating unit itself. Turn your thermostat well above the room temperature and not just a few degrees. If in doubt, turn it all the way up. Make sure you have oil in your tank. There should be a gauge on indoor tanks and we can provide you with a tank stick if you have an in-ground tank. Press the reset button just once. It will try to start. See similar questions...

Sometimes, in spite of the best effort, an addict/alcoholic will continue to refuse treatment. It is crucial that any consequences which have been set by the participants are up held. See similar questions...

Bricolage depends heavily on CPAN modules. The purpose of make cpan is to verify that the required CPAN modules exist and, if not, fetch and install them from CPAN, whenever possible. In the worst case where it cannot handle the an error automatically, it gives instruction on how to do it manually. Usually, the instruction tell you to perl -MCPAN -e shell look package::module perl Makefile.PL make make test make install Sometimes, it will exit with a error without telling you what to do. See similar questions...

You should pull your weapon out of the FAIL pile and first look it over to see if you know why it failed: exposed core, ripped weapon cover, foam loose on the core, foam breaking down in spots, loose pommel, low weight, etc. You can then ask the weapons checkers why your weapon failed. While they are extremely busy most mornings, you'll often be able to talk to the person who failed your weapon and they can tell you exactly why it failed. See similar questions...