destructor

Unlike destructors , it is often the case that something done inside a constructor might throw an exception.

Destructors are methods that are called by the runtime execution engine when the object is about to be removed from memory .

The bottom line is that gratuitously declaring all destructors virtual is just as wrong as never declaring them virtual.

Classes that serve as base classes in a multiple-inheritance hierarchy ordinarily should define their destructors to be virtual.

Constructors called in the order of base-to-derived. However, the execution of destructors cannot be controlled by the programmer.

Modifier can be used with classes, fields, methods, properties, and events, but cannot be used with destructors or types other than classes.

The fact that destructors are run leads to an important programming technique that makes programs more exception safe .

Therefore, calls to these constructors and destructors must be performed by the run-time code.

Add the methods, properties, fields, events, constructors (method), destructors (method), and constants that define the structure.

An interface cannot contain constants, fields, operators, instance constructors, destructors, or types.

Interfaces have no constructors or destructors.

Destructors cannot be inherited or overloaded.

Destructors cannot be defined instructs.

Destructors are often executed during stack unwinding .

Destructors for local objects are run; resources allocated by class-type objects ordinarily are freed by their destructor.

All the windows are automatically unregistered in their destructors.

Under a garbage collected environment, destructors to free memory are unnecessary.

Sometimes we need some destructors release the bad mood. No matter how, by myself is a very important thing.

The constructors for the individual objects in the array are not invoked, although the destructors are.

During stack unwinding, the memory used by local objects is freed and destructors for local objects of class type are run.

Avoid calling virtual functions in constructors and destructors.

To resolve this, ensure that destructors called from Release methods only contain native code.

Part 2 of this series explains modeling C# indexers, properties, constructors, destructors, and operators.

Destructors are used to destruct instances of classes.

Choose this option only if you are certain that all class constructors and destructors call virtual functions virtually.

You should not use structured exception handling in functions that use objects with destructors.

This was safe in our example above, because we required that T destructors never throw.

Thus, the assertions can be used safely in destructors, too.

Finally, it's worth mentioning that it can be convenient to declare pure virtual destructors in some classes.

Empty destructors should not be used.

Destructors are also called when the program exits.

Item 14: Make sure base classes have virtual destructors .

Methods or destructors can have a negative impact on performance and you should avoid using them unnecessarily.

Destructors for base classes are an important exception to the Rule of Three ( Section 13. 3, p. 485).

When destructors are executing, the exception has been raised but not yet handled.

Using pool interfaces, you can choose to run their destructors or just drop them off into oblivion;

Managing exceptions in constructors and destructors

Modeling constructors and destructors

It might result in leaks for classes with destructors that perform memory de-allocation;

Using Destructors to Release Resources