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std::is_aggregate

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Defined in header <type_traits>
template< class T >
struct is_aggregate;
(since C++17)

Checks if T is an aggregate type. The member constant value is equal to true if T is an aggregate type and false otherwise.

The behavior is undefined if std::remove_all_extents_t<T> is an incomplete type other than (possibly cv-qualified) void.

Contents

[edit] Template parameters

T - a type to check

[edit] Helper variable template

template< class T >
inline constexpr bool is_aggregate_v = std::is_aggregate<T>::value;
(since C++17)

Inherited from std::integral_constant

Member constants

value
[static]
true if T is an aggregate type , false otherwise
(public static member constant)

Member functions

operator bool
converts the object to bool, returns value
(public member function)
operator()
(C++14)
returns value
(public member function)

Member types

Type Definition
value_type bool
type std::integral_constant<bool, value>


[edit] Example