Delegating constructor If the name of the class itself appears as class-or-identifier in the member initializer list, then the list must consist of that one member initializer only; such a constructor is …

Default constructors are called during default initializations and value initializations. Implicitly-declared default constructor If there is no user-declared constructor or constructor template for a class type, …

A copy constructor is a constructor which can be called with an argument of the same class type and copies the content of the argument without mutating the argument.

The constructor selected (which is one of the default constructors) is called to provide the initial value for the new object; if T is an array type, every element of the array is default-initialized; otherwise, no …

This is a reference of the core C++ language constructs.

It is said that a converting constructor specifies an implicit conversion from the types of its arguments (if any) to the type of its class. Note that non-explicit user-defined conversion function also specifies an …

Properties of classes ... Implicit-lifetime class An implicit-lifetime class is a class that is an aggregate whose destructor is not user-declared(until C++11) user-provided (since C++11), or has at least one …

Syntax Class property specifiers appear at the beginning of the class definition, immediately after the name of the class, and cannot appear in a class declaration.

1) The default constructor since C++11. Constructs an empty list with a default-constructed allocator. If Allocator is not DefaultConstructible, the behavior is undefined. 2) The default constructor until …

Initialization of a variable provides its initial value at the time of construction. The initial value may be provided in the initializer section of a declarator or a new expression. It also takes place during …