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× C++ Standard Library C++ STL Library


C++ <initializer_list>

An initializer_list object is designed to hold an array of values. An initializer_list object is automatically constructed when:

  • a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an initializer_list parameter.
  • a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an initializer_list parameter.
  • a braced-init-list is bound to auto, including in a ranged for loop.

The initializer_list object refers to the elements of this array without containing them. Copying an initializer_list object produces another object referring to the same underlying elements, not to new copies of them.

Syntax

template <class T> 
  class initializer_list;

Parameters

T Type of the elements stored in the initializer_list.

Member Types

Member typesDefinition
value_type T (First template parameter)
reference const T&
const_reference const T&
iterator const T*
const_iterator const T*
size_type size_t

C++ <initializer_list> - Member Functions

The C++ <initializer_list> has a number of member functions which are listed below:

FunctionsDescription
begin() Returns a pointer to the first element of the initializer_list.
end() Returns a pointer to the past-the-last element of the initializer_list.

C++ <initializer_list> - Non-member Functions

The C++ <initializer_list> has a number of non-member functions which are listed below:

FunctionsDescription
begin() Returns a pointer to the first element of the initializer_list.
end() Returns a pointer to the past-the-last element of the initializer_list.

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