A pointer in computer programming is an object that refers to a memory address. In Fortran it is declared with the keyword pointer in its declaration. Additionaly its assignment is done with the => keyword.
However, in order to have an array of pointers use the following form must be used:
type(objectContainer), allocatable :: some(:)
...
type objectContainer
class(object), pointer :: toObj
end type
Do not fall into the mistake to use the form below as it is a pointer to an array:
class(object), pointer :: some(:)
nor
type(object), pointer :: some(:)