December 2015
Beginner to intermediate
195 pages
2h 52m
English
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CHAPTER 3
Singleton Patterns
GoF Definition: Ensure a class only has one instance, and provide a global point of access to it.
Concept
A particular class should have only one instance. We will use only that instance whenever we are in need.
Real-Life Example
Suppose you are a member of a cricket team. And in a tournament your team is going to play against another team. As per the rules of the game, the captain of each side must go for a toss to decide which side will bat (or bowl) first. So, if your team does not have a captain, you need to elect someone as a captain first. And at the same time, your team cannot have more than one captain.
Computer ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.