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  2. Initialization (programming) - Wikipedia

    en.wikipedia.org/wiki/Initialization_(programming)

    In C++, a constructor of a class/struct can have an initializer list within the definition but prior to the constructor body. It is important to note that when you use an initialization list, the values are not assigned to the variable. They are initialized. In the below example, 0 is initialized into re and im. Example:

  3. C++11 - Wikipedia

    en.wikipedia.org/wiki/C++11

    However, C++03 allows initializer-lists only on structs and classes that conform to the Plain Old Data (POD) definition; C++11 extends initializer-lists, so they can be used for all classes including standard containers like std::vector. C++11 binds the concept to a template, called std::initializer_list. This allows constructors and other ...

  4. Placement syntax - Wikipedia

    en.wikipedia.org/wiki/Placement_syntax

    The Standard C++ syntax for a non-placement new expression is [2] new new-type-id ( optional-initializer-expression-list) The placement syntax adds an expression list immediately after the new keyword. This expression list is the placement. It can contain any number of expressions. [2] [3] [6]

  5. struct (C programming language) - Wikipedia

    en.wikipedia.org/wiki/Struct_(C_programming...

    A struct can contain other data types so is used for mixed-data-type records. For example a bank customer struct might contains fields: name, address, telephone, balance. A struct occupies a contiguous block of memory, usually delimited (sized) by word-length boundaries.

  6. Constructor (object-oriented programming) - Wikipedia

    en.wikipedia.org/wiki/Constructor_(object...

    The constructor has two parts. First is the initializer list which follows the parameter list and before the method body. It starts with a colon and entries are comma-separated. The initializer list is not required, but offers the opportunity to provide values for data members and avoid separate assignment statements.

  7. Lazy initialization - Wikipedia

    en.wikipedia.org/wiki/Lazy_initialization

    The following is an example of a class with lazy initialization implemented in ... {static struct fruit * fruit_list; static int seq ... This example is in C++ ...

  8. C++ Standard Library - Wikipedia

    en.wikipedia.org/wiki/C++_Standard_Library

    <initializer_list> Added in C++11. Provides initializer list support. <limits> Provides the class template std::numeric_limits, used for describing properties of fundamental numeric types. <new> Provides operators new and delete and other functions and types composing the fundamentals of C++ memory management. <source_location> Added in C++20.

  9. C++ classes - Wikipedia

    en.wikipedia.org/wiki/C++_classes

    A class in C++ is a user-defined type or data structure declared with any of the keywords class, struct or union (the first two are collectively referred to as non-union classes) that has data and functions (also called member variables and member functions) as its members whose access is governed by the three access specifiers private, protected or public.