#ifndef LIST_H_DEF
#define LIST_H_DEF

typedef struct List {
    void* data;
    struct List* next;
} List;

// Push data to the end of the list.
void list_push(List** head, void* data);

// Remove the final element of the list and return its data.
void* list_pop(List** head);

// Insert the data object to the beginning of the list.
void list_insert(List** head, void* data);

// Get the size of the list.
unsigned int list_sizeof(const List* head);

// Get the data of the node at the given ordinal number in the list.
List* list_get(List* head, unsigned int index);

// Delete the item in the list at the given ordinal location (1 is the first).
void list_remove(List** head, unsigned int index);

#endif