How do I print the elements of a C++ vector in GDB?

print *(myVector._M_impl._M_start)@myVector.size()

print *(myVector._M_impl._M_start)@N

myVector._M_impl._M_start

print P@N

(gdb) print myVector

$1 = std::vector of length 3, capacity 4 = {10, 20, 30}