August 2018
Intermediate to advanced
404 pages
11h 19m
English
Content preview from Ethereum Cookbook
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Selecting a winner based on the ticket number
In the previous recipe, we learned how to create a basic decentralized token and the procedure to record a bet. A lottery is more interesting when there is a prize involved. The logic for selecting a winner can be something like verifying the guess against some future block hash or number. We can also add a feature to decide the winning amount based on how accurate the prediction was.
In this recipe, you will learn how to select a winner based on logic in the smart contract. You will also learn how to calculate the winning amount and transfer it to the player.
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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.