todo: peek
Revert "todo: peek"

This reverts commit 359713f3de6f069781fdb83d7e173ac926870b21.
ok, let's introduce a new static value table
header file for static field table
doing: static table
working on static fields
stupid hash table design
stupid hash table design
hash table is a stupid idea for static field table !!!
basic operations for skiplist has been done
skiplist done, new done, todo free
use segtree