December 2015
Beginner to intermediate
195 pages
2h 52m
English
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CHAPTER 13
Memento Patterns
GoF Definition: Without violating encapsulation, capture and externalize an object’s internal state so that the object can be restored to this state later.
Concept
Our aim is to save the state of an object, so that in the future, we can go back to the specified state. Three objects are playing the game here—a memento, a caretaker, and the originator. The memento will store the internal states of the originator. The originator can have the internal states and it has the ability to restore into its earlier state. An originator can also retrieve information from the memento. The caretaker takes care of the memento’s safekeeping ...
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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.
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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.