global

#define EMPTY_STRING ""

#define     Boolean

#define     Object

Boolean     string_equals                   (const char *string_1,
                                             const char *string_2);

Boolean     string_not_equals               (const char *string_1,
                                             const char *string_2);

Boolean     string_empty                    (const char *string_1);

Boolean     string_starts_with              (const char *string_1,
                                             const char *string_2);

Boolean     string_ends_with                (const char *string_1,
                                             const char *string_2);

void        string_trim                     (char *string_1);

void*       checked_malloc                  (const size_t size);