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Beside the initialization work required by the environment and toolchain, crt0 can perform additional operations defined by the programmer, such as executing C++ global constructors and C functions carrying GCC's ((constructor)) attribute. [2] [3] "crt" stands for "C runtime", and the zero stands for "the very beginning".
Both Clang and the GNU Compiler Collection implement a non-standard extension to the C language to support RAII: the "cleanup" variable attribute. [16] The following annotates a variable with a given destructor function that it will call when the variable goes out of scope:
New standard attributes ... introducing constructor deduction guides, e.g. allowing std:: ... Clang 5 and later supports all C++17 language features.
Copy constructor if no move constructor and move assignment operator are explicitly declared. If a destructor is declared generation of a copy constructor is deprecated (C++11, proposal N3242 [2]). Move constructor if no copy constructor, copy assignment operator, move assignment operator and destructor are explicitly declared.
This constructor is a special kind of constructor, called an initializer-list-constructor. Classes with such a constructor are treated specially during uniform initialization (see below ) The template class std::initializer_list<> is a first-class C++11 standard library type.
In the C and C++ programming languages, an inline function is one qualified with the keyword inline; this serves two purposes: . It serves as a compiler directive that suggests (but does not require) that the compiler substitute the body of the function inline by performing inline expansion, i.e. by inserting the function code at the address of each function call, thereby saving the overhead ...
C++11 added default member initializers, expressions to be applied to members at class scope if a constructor did not initialize the member itself. The definition of aggregates was changed to explicitly exclude any class with member initializers; therefore, they are not allowed to use aggregate initialization.
C++/CLI is a variant of the C++ programming language, modified for Common Language Infrastructure.It has been part of Visual Studio 2005 and later, and provides interoperability with other .NET languages such as C#.