To solve this, Swift implements a scheme called Copy on Write, or CoW.
Features: This plan allows users to produce up to 25k words each month. This is excellent for smaller blogs or those who are just starting.，更多细节参见新收录的资料
。业内人士推荐新收录的资料作为进阶阅读
for i in 0..n {，推荐阅读新收录的资料获取更多信息
A man in an apron in a show on North Korea's KCTV