3.0 //初始化数组的大小和初始值
var allZeros = [Int](repeatElement(0, count: 5))
var empty6 = Array(repeating: "4.5", count: 5);
var allZeros = [Int](repeatElement(0, count: 5))
var empty6 = Array(repeating: "4.5", count: 5);
2017-02-01
skillsOfA.union(skillsOfB)
skillsOfA.formUnion(skillsOfB)
skillsOfA.intersection(skillsOfB)
skillsOfA.formIntersection(skillsOfB)
skillsOfA.formUnion(skillsOfB)
skillsOfA.intersection(skillsOfB)
skillsOfA.formIntersection(skillsOfB)
2017-01-13