引用变量:执行 变量 A= 变量 B 这段代码时,变量 A 不会重新创建一个与 B 变量值相同的数据。对于 A 变量的修改可以影响到 B。
数组遍历
func arrayIterator():
# range等价于for(int i = 0; i < 20; i++)
print("数组遍历方法1:")
for i in range(3):
print(i)
print("数组遍历方法2:")
for ele in arr:
print(ele)
print("数组遍历方法3:")
for index in range(arr.size()):
print(arr[index])
字典遍历
func dictionaryIterator():
print("字典遍历方法1:")
for key in dict:
print("key:" + key as String)
print("value:" + dict[key] as String)
print("字典遍历方法2:")
for key in dict.keys():
print("key:" + key as String)
print("value:" + dict[key] as String)
print("字典遍历方法3:")
for value in dict.values():