With another WWDC coming to an end, Swift has moved on. The blogger has been considering whether to learn Swift or not. Just a few days ago, the blogger came across a group of pictures and looked for them but did not find them. The general content is as follows: In the picture, Luo Yonghao asked a programmer: Do you believe that you will use Swift to develop tomorrow? Programmer: No. Luo Yonghao: Apple’s father said that from tomorrow, apps that are not developed by Swift will not be uploaded to the App Store. Programmer:… (The above is a pure spoof) Although Apple dad will not do this, it indirectly indicates that the mainstream of Swift will become stronger and stronger. As a result, bloggers feel a crisis, as if they see the end of object-C developers. In addition, the market in recent years, without bloggers to say more, everyone will feel a sense of urgency. Therefore, the blogger starts to enter the pit of Swift today, and recommends a website: www.runoob.com/swift (this website has nothing to do with the blogger, there is no propaganda, but I think the basic content is very good). About the content here, the blogger will post the main things and things that are not very understood on his blog, welcome everyone to visit and learn.