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Solidity Programming Essentials

You're reading from  Solidity Programming Essentials

Product type Book
Published in Apr 2018
Publisher Packt
ISBN-13 9781788831383
Pages 222 pages
Edition 1st Edition
Languages

Table of Contents (17) Chapters

Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
1. Introduction to Blockchain, Ethereum, and Smart Contracts 2. Installing Ethereum and Solidity 3. Introducing Solidity 4. Global Variables and Functions 5. Expressions and Control Structures 6. Writing Smart Contracts 7. Functions, Modifiers, and Fallbacks 8. Exceptions, Events, and Logging 9. Truffle Basics and Unit Testing 10. Debugging Contracts 1. Other Books You May Enjoy Index

The return statement


Returning data is an integral part of a Solidity function. Solidity provides two different syntaxes for returning data from a function. In the following code sample, two functions—getBlockNumber and getBlockNumber1are defined. The getBlockNumber function returns a uint without naming the return variable. In such cases, developers can resort to using the return keyword explicitly to return from the function.

The getBlockNumber1 function returns uint and also provides a name for the variable. In such cases, developers can directly use and return this variable from a function without using the return keyword as shown in the following screenshot:

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