标签：list ref check lan roo hash blank https stack
https://stackoverflow.com/questions/51927/how-to-check-if-element-in-groovy-array-hash-collection-list
[Groovy] How to check if element in groovy array/hash/collection/list?
原文地址：http://www.cnblogs.com/MasterMonkInTemple/p/7058125.html
