Singleton Pattern in Python, with Examples
In this article we describe the Singleton pattern in Python, a pattern that makes sure a class has only one instance. Learn two ways to implement it.
Category: Software engineering
Singleton Pattern in Java, with Examples
Learn the Singleton design pattern in Java: a software engineering pattern that limits the creation of objects of a class to one, with code examples.
Pandas in Python, with Examples – Part III – Pivot_table
Learn how to use pandas pivot_table in Python with practical examples: group, aggregate and analyze the MovieLens dataset like in a spreadsheet.
How to Use Multiple GitHub Accounts over HTTPS
Learn how to use several GitHub accounts over HTTPS: configure git so each repository gets its own credentials in your keychain and avoid 403 errors.
Interfaces in Java 8: The Default Method, with Examples
Learn how the default method in Java 8 interfaces works, how it lets you add behavior without touching your classes, and how it simulates multiple inheritance.
Polymorphism in Java -Interface- (Part II), with Examples
Learn how interfaces work in Java and how they take polymorphism a step further than abstract classes, with a practical example of a football team.
Polymorphism in Java (Part I), with Examples
Learn what polymorphism is in Java and how it works in object-oriented programming, with abstract classes, method overriding and a football team example.
Inheritance in Java, with Examples
Learn what inheritance is in object-oriented programming and how it works in Java, using extends, protected and super with a clear, practical example.
What Is Innovation? Part IV (Uncertainty in Innovation)
Learn why uncertainty is built into every innovation process, the 8 factors that create it, and the sources of information that help reduce risk.
What Is Innovation? Part III (Types of Innovation)
Learn the types of innovation through the famous innovation matrix: incremental, semi-radical and radical, with real examples from the technology world.
What Is Innovation? Part II (Social Model of Technology Adoption)
Learn how Rogers' social model of technology adoption classifies users, from Innovators to Laggards, with a real-world example: the iPhone.
What Is Innovation? Part I (Concepts and Examples)
Learn what innovation really means and why high tech is not the same thing. We look at the mop and the first tablets to tell an invention from an innovation.