January 2022
Beginner to intermediate
816 pages
21h 49m
English
book
Cryptocurrency All-in-One For Dummies
by Kiana Danial, Tiana Laurence, Peter Kent, Tyler Bain, Michael G. Solomon
Content preview from Cryptocurrency All-in-One For Dummies
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Chapter 6
Discovering Smart Contracts
IN THIS CHAPTER
Describing supply chain and its challenges
Exploring a blockchain solution to supply chain problems
Handling data and computation in Solidity
Coding to limit gas cost
Controlling execution flow and responding to errors
Smart contracts are the functional part of any blockchain solution. Just like the objects described in Chapter 5 of this minibook, a blockchain solution is a combination of data and actions on that data. The data is the content of the blocks on the blockchain. You already know that after data is added, it stays there forever. (Although you could technically change blockchain data, doing so without any other node detecting your change is next to impossible.) Because blockchain data is immutable, it is important to carefully control how that data is added.
The actions that operate on the blockchain data are the smart contracts. Smart contracts, like the data, are stored in blocks on the blockchain. But smart contracts ...
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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.