CollectionUtils Type

Methods for dealing with collections

• CollectionUtils.union(list1,list2): returns the union of two lists
  Example:

  def list1 = ["A", "B", "C", "D", "E", "F"]
  def list2 = ["B", "D", "F", "G", "H", "K"]
  def re = CollectionUtils. union(list1, list2)
  log. info(re) // [A, B, C, D, E, F, G, H, K]
  

• CollectionUtils.intersection(list1,list2): returns the intersection of two lists
  Example:

  def list1 = ["A", "B", "C", "D", "E", "F"]
  def list2 = ["B", "D", "F", "G", "H", "K"]
  def re = CollectionUtils. intersection(list1, list2)
  log. info(re) //[B, D, F]
  

• CollectionUtils.disjunction(list1,list2): returns the complement of the intersection of two lists (disjunction)
  Example:

  def list1 = ["A", "B", "C", "D", "E", "F"]
  def list2 = ["B", "D", "F", "G", "H", "K"]
  def re = CollectionUtils.disjunction(list1, list2)
  log.info(re) //[A, C, E, G, H, K]
  

• CollectionUtils.subtract(list1,list2): returns the difference (subtraction) of two lists
  Example:

  def list1 = ["A", "B", "C", "D", "E", "F"]
  def list2 = ["B", "D", "F", "G", "H", "K"]
  def re = CollectionUtils. subtract(list1, list2)
  log.info(re) //[A, C, E]
  

• CollectionUtils.isEqualCollection(list1,list2): Determine whether two collections are equal
  Example:

  def list1 = ["A", "B", "C", "D", "E", "F"]
  def list2 = ["A", "F", "B", "C", "D", "E"]
  def re = CollectionUtils.isEqualCollection(list1, list2)
  log. info(re) //true
  

• CollectionUtils.isSubCollection(list1,list2): Whether list1 is a subset of list2
  Example:

  def list1 = ["A", "F"]
  def list2 = ["A", "B", "C", "D", "E", "F"]
  def re = CollectionUtils.isSubCollection(list1, list2)
  log. info(re) //true
  

• CollectionUtils.cardinality(str,list1): the number of occurrences of the element
  Example:

  def list1 = ["A", "A", "A", "D", "E", "F"]
  String str = "A"
  def re = CollectionUtils. cardinality(str, list1)
  log. info(re) //3