「Groovy」- 常用列表操作（List） @20210307

def foo = []
def myList = ["Apple", "Banana", "Orange"]
println myList.class // class java.util.ArrayList

def first = ["a", "b", "c"]
def second = ["d", "e", "f"]

assert ["a", "b", "c", "d", "e", "f"] == (first + second)

// pop

def list = ["a", false, 2]
assert list.pop() == ‘a‘
assert list == [false, 2]

// push
def list = [3, 4, 2]
list.push("x")
assert list == [‘x‘, 3, 4, 2]

list.add(0, element)

import static groovy.json.JsonOutput.*
def config = [‘test‘: ‘lalala‘]
println prettyPrint(toJson(config))

def lst = [1,2,3,4];
def newlst = lst.collect {element -> return element * element}
println(newlst);