* memory management of objects.
 * REQUIRES DECLARATION: int i;
 */

#define FOREACH(var,ary) \
    for(i=0 ; i<(ary).num; i++) if ((ary).list[i] == NULL) { \
	continue; \
    } else if (var = (ary).list[i], 1) 

/*
 * Convenience macros for iterating through hash tables. FOREACH_HASH_DECLS
 * sets up the declarations needed for the main macro, FOREACH_HASH, which
 * does the actual iteration. FOREACH_HASH_VALUE is a restricted version that
 * only iterates over values.
 */