open xcode welcome dialog popup

This article takes an iOS 11 application as an example to show developers how to create projects using Xcode 10. It also shows some functions of the iOS simulator and […]

ios autolayout example

How did you set up UI layout in older iOS application development? Write a lot of coordinate calculation code? To ensure a perfect UI effect on both the 3.5-inch and […]

For mutable objects, such as a list, to operate on a list, the contents within the list will change, for example. >>> l = [‘f’, ‘e’, ‘d’] >>> l.sort() >>> […]

1. Python Dict Introduction. Python has a built-in dictionary: dict. It is also called map in other coding languages, using key-value storage, it has an extremely fast lookup speed. For […]