ref: 930433a467b174dd86081fbec4079805f31cb388
dir: /qp.h/
typedef union Trie Trie; #pragma incomplete Trie int qpget(Trie *t, char *k, int len, char **pk, void **pv); int qpnext(Trie *t, char **pk, int *plen, void **pv); Trie *qpdel(Trie *t, char *k, int len, char **pk, void **pv); Trie *qpset(Trie *t, char *k, int len, void *v);