January 2015
Intermediate to advanced
212 pages
4h 22m
English
Content preview from Mastering Python Design PatternsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. The Prototype Pattern
Sometimes, we need to create an exact copy of an object. For instance, assume that you want to create an application for storing, sharing, and editing (such as modifying, adding notes, and removing) culinary recipes. User Bob finds a cake recipe and after making a few modifications he thinks that his cake is delicious, and he wants to share it with his friend, Alice. But what does sharing a recipe mean? If Bob wants to do some further experimentation with his recipe after sharing it with Alice, will the new changes also be visible in Alice's recipe? Can Bob keep two copies of the cake recipe? His delicious cake recipe should remain unaffected by any changes made in the experimental cake recipe.
Such problems can ...
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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.