std::is_literal_type
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                    | Defined in header  <type_traits> | ||
| template< class T > struct is_literal_type; | (since C++11) | |
If T satisfies all requirements of LiteralType, provides the member constant value equal true. For any other type, value is false.
| Contents | 
Inherited from std::integral_constant
Member constants
| value [static] | true if Tis a literal type, false otherwise(public static member constant) | 
Member functions
| operator bool | converts the object to bool, returns value(public member function) | 
Member types
| Type | Definition | 
| value_type | bool | 
| type | std::integral_constant<bool, value> | 
[edit] Notes
Only literal types may be used as parameters to or returned from constexpr functions. Only literal classes may have constexpr member functions.
[edit] Example
Run this code
#include <iostream> #include <type_traits> struct A { int m; }; struct B { virtual ~B(); }; int main() { std::cout << std::boolalpha; std::cout << std::is_literal_type<A>::value << '\n'; std::cout << std::is_literal_type<B>::value << '\n'; }
Output:
true false


