How To Change Screen Resolution After Install Ubuntu In VirtualBox
After install ubuntu in VirtualBox and login, i find the ubuntu os screen resolution is configured at 800*600, this is not a good screen resolution for usage. I want to […]
What Is Decorator In Python With Example
Decorators can add new functions or restrictions to the decorated objects without modifying the original source code. There are many kinds of decorators, including function decorators and class decorators. The […]
How To Use Python Thread Example
There are two method to implement thread programming in python. 1. Use _thread module. 2. Use threading module’s Thread and Lock class. This article will show you examples about how to […]
How To Use User Defined Exception In Python
Python provide a lot of built-in exception classes. All the built-in classes are sub class of builtins.BaseException class. Besides built-in exception class, you can also create customize exception class. But […]
How To Install Python Interpreter In PyCharm
How To Fix Unresolved Import Issues In Eclipse PyDev Project
When i use eclipse to open an exist PyDev project, i find error message like Unresolved import: smtplib. This error means the python3 built-in library smtplib can not be found […]
How To Use iOS Progress View Programmatically In Swift
UIKit.UIProgressView class is used to implement iOS progress bar component. This article will tell you how to use it both in Main.storyboard visually and swift source code programmatically. First let […]
How To Use iOS Activity Indicator Visually And Programmatically In Swift
This example will tell you how to use UIActivityIndicatorView class to implement iOS activity indicator both visually ( in Main.storyboard file ) and programmatically in swift source code. First let […]
How To Rename IBOutlet Variable Or IBAction Function Without Lose Connection In Swift
When i develop iOS app user interface, i add one button and one activity indicator in the main storyboard file. Because i want to write swift source code to manage […]
How To Prompt iOS Alert Action Sheet In Swift Example
We all know iOS alert dialog is a modal dialog which will prompt at iOS device screen center in usual, but it can also slide out from iOS screen bottom. […]
