Enum member isControlBlock

Check if type T is of type ControlBlock!(...).

enum isControlBlock(T...) = is(Unqual!(T[0]) == ControlBlock!Args, Args...);

Example

static assert(!isControlBlock!long);
static assert(!isControlBlock!(void*));
static assert(isControlBlock!(ControlBlock!long));  
static assert(isControlBlock!(ControlBlock!(int, int)));