is_pod template in C++

std::is_enum Template in C++

Last Updated : 19 Nov, 2018

The std::is_enum template of C++ STL is used to check whether the given type is enum or not. It returns a boolean value showing the same. Syntax:

template <class T> struct is_enum;

Parameter: This template accepts single parameter T (Trait class) to check whether T is a enumeration type or not. Return Value: This template returns a boolean value as shown below:

True: if the type is a enumeration.
False: if the type is a non-enumeration.

Below programs illustrate the std::is_enum template in C++: Program 1::

CPP

// C++ program to illustrate
// is_enum template

#include <iostream>
#include <type_traits>
using namespace std;

class GFG1 {
};
enum class GFG2 { var1,
                  var2,
                  var3,
                  var4
};

// Driver code
int main()
{
    cout << boolalpha;
    cout << "is_enum:" << endl;
    cout << "GFG1: "
         << is_enum<GFG1>::value << endl;
    cout << "GFG2: "
         << is_enum<GFG2>::value << endl;

    return 0;
}

Output:

is_enum:
GFG1: false
GFG2: true

Program 2::

CPP

// C++ program to illustrate
// is_enum template

#include <iostream>
#include <type_traits>
using namespace std;

class GFG1 {
};

enum class GFG2 : int {};

// Driver code
int main()
{
    cout << boolalpha;
    cout << "is_enum:" << endl;
    cout << "GFG1: "
         << is_enum<GFG1>::value << '\n';
    cout << "GFG2: "
         << is_enum<GFG2>::value << '\n';
    cout << "int: "
         << is_enum<int>::value << '\n';
    return 0;
}

Output:

is_enum:
GFG1: false
GFG2: true
int: false

is_pod template in C++

rajasethupathi

Improve

Article Tags :

Practice Tags :

Similar Reads

std::is_compound Template in C++

The std::is_compound template of C++ STL is used to check the whether the type is a compound type or not. It returns a boolean value showing the same. Syntax: template < class T > struct is_compound; Parameter: This template contains single parameter T (Trait class) to check whether T is a com

std::is_integral template in C++

The std::is_integral template of C++ STL is used to check whether the given type is integral or not. It returns a boolean value showing the same. Syntax: template <class T> struct is_integral; Template Parameter: This template accepts a single parameter T (Trait class) to check whether T is a

is_empty template in C++

The std::is_empty template of C++ STL is used to check whether the given type is empty or not. This method returns a boolean value showing whether the given type is empty or not. Syntax: template < class T > struct is_empty; Parameters: This template contains single parameter T (Trait class) t

is_pod template in C++

The std::is_pod template of C++ STL is used to check whether the type is a plain-old data(POD) type or not. It returns a boolean value showing the same. Syntax: template < class T > struct is_pod; Parameter: This template contains single parameter T (Trait class) to check whether T is a pod ty

is_signed template in C++

The std::is_signed template of C++ STL is used to check whether the type is a signed arithmetic type or not. Syntax: template <class T > struct is_signed; Parameters: This template contains single parameter T (Trait class) to check whether T is a signed arithmetic type or not. Return Value: Th

std is_union() template in C++

The std::is_union template of C++ STL is used to check whether the given type is union or not. It returns a boolean value showing the same. Syntax: template <class T> struct is_union; Parameter: This template accepts single parameter T (Trait class) to check whether T is a union or not. Return

is_const Template in C++

The std::is_const template of C++ STL is used to check whether the type is a const-qualified or not. It returns a boolean value showing the same. Syntax: template < class T >struct is_const; Template Parameter: This template contains single parameter T (Trait class) to check whether T is a con

std is_object Template in C++

The std::is_object template of C++ STL is used to check whether the given type is object or not. It returns a boolean value showing the same. Syntax: template <class T > struct is_object; Parameter: This template accepts a single parameter T (Trait class) to check whether T is a object type or

is_scalar template in C++

The std::is_scalar template of C++ STL is used to check whether the given type is a scalar type or not. It returns a boolean value showing the same. Syntax: template < class T > struct is_scalar; Parameter: This template accepts a single parameter T (Trait class) to check whether T is a scalar

is_pointer Template in C++

The std::is_pointer template of C++ STL is used to check whether the given type is pointer or not. It returns a boolean value showing the same. Syntax: template <class T > struct is_pointer; Parameter: This template accepts a single parameter T (Trait class) to check whether T is a pointer or