碰撞模式可以设置为空吗？

Question

UiCollisionBehavior有四种碰撞模式： 1.项目 2.边界 3. Init（rawValue：UInt） 4.一切

是否可以将collisionmode设置为空？

Answer 1

=========== sizeOfCombo: 6 sizeOfList: 48 noOfUniqueInList 1 percUnique 2 Combos: 12271512 print(len(list(combinations(lst,k)))) : 2.04968 seconds. Combos: 1 print(len(list( iterUniqueCombos(lst,k)))) : 0.00011 seconds. Combos: 1 print(len(list( iterFastUniqueCombos(lst,k)))) : 0.00008 seconds. Combos: 1 print(len(list( uniqueCombinations(lst,k)))) : 3.61812 seconds. ========== sizeOfCombo: 6 sizeOfList: 48 noOfUniqueInList 48 percUnique 100 Combos: 12271512 print(len(list(combinations(lst,k)))) : 1.99383 seconds. Combos: 12271512 print(len(list( iterUniqueCombos(lst,k)))) : 49.72461 seconds. Combos: 12271512 print(len(list( iterFastUniqueCombos(lst,k)))) : 8.07997 seconds. Combos: 12271512 print(len(list( uniqueCombinations(lst,k)))) : 8.11974 seconds. ========== sizeOfCombo: 6 sizeOfList: 48 noOfUniqueInList 27 percUnique 56 Combos: 12271512 print(len(list(combinations(lst,k)))) : 2.02774 seconds. Combos: 534704 print(len(list( iterUniqueCombos(lst,k)))) : 1.60052 seconds. Combos: 534704 print(len(list( iterFastUniqueCombos(lst,k)))) : 1.62002 seconds. Combos: 534704 print(len(list( uniqueCombinations(lst,k)))) : 3.41156 seconds. ========== sizeOfCombo: 6 sizeOfList: 48 noOfUniqueInList 31 percUnique 64 Combos: 12271512 print(len(list(combinations(lst,k)))) : 2.03539 seconds. Combos: 1114062 print(len(list( iterUniqueCombos(lst,k)))) : 3.49330 seconds. Combos: 1114062 print(len(list( iterFastUniqueCombos(lst,k)))) : 3.64474 seconds. Combos: 1114062 print(len(list( uniqueCombinations(lst,k)))) : 3.61857 seconds. 是option set，这意味着您可以传递一个空数组＆＃39; （UICollisionBehaviorMode）如果您不想要任何选项。