Enum member isNullType
True if T is of type null
enum isNullType(T...)
= is(U == typeof(null));
Example
int a;
int *b = null;
struct C {}
C c;
void f() {}
static assert(isNullType!null);
static assert(isNullType!a == false);
static assert(isNullType!b == false);
static assert(isNullType!c == false);
static assert(isNullType!f == false);