tree 08f8a8199c6d0eb7716d734ae6eb3412882afb2a
parent 7e9b06db5d99e73820751e20a2960ba190668d4b
author Zhenkai Zhu <zhenkai@cs.ucla.edu> 1338666907 -0700
committer Zhenkai Zhu <zhenkai@cs.ucla.edu> 1338666907 -0700

add validator for prefix