List使用

//1、Remove
   def a = [1,2,3,4]
   def b = [3,4,5]
   a.add(5)
// a = [1,2,3,4,5]
   a.remove(5)
// faile 因为这代表移除list中的第五项，显然越界。
   a.remove(4)
// a = [1,2,3,4]
   b.addAll(a)
// b = [1,2,3,4,5]
   b.removeAll[a]
// b = [5]
   b.clear()
// b = []

//2、Transpose
   def a = [1, 2, 3]   
   def b = [4, 5, 6]   
   def ab = [a, b].transpose()
// ab = [[1, 4], [2, 5], [3, 6]]
   def m = [:]   
   [a, b].transpose().each { k, v -> m += [(k): v] }   
// m == [1: 4, 2: 5, 3: 6]
//相当于 （def m = [a, b].transpose().inject([:]) { s, l -> s + [(l[0]): l[1]] }）
//注： 组合的数组中不能出现重复（纯数字项）。
def xxx = [1,2,3,4,5,6]
def ooo = ['a','b','c','d','e','f']
def ccc = [xxx, ooo].transpose()
println ccc
[xxx, ooo].transpose().eachWithIndex {value, key ->
    print "$key $value \n"
}
// [[1, a], [2, b], [3, c], [4, d], [5, e], [6, f]]
// 0 [1, a]
// 1 [2, b]
// 2 [3, c]
// 3 [4, d]
// 4 [5, e]
// 5 [6, f]