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Mastering Blockchain Programming with Solidity

You're reading from   Mastering Blockchain Programming with Solidity Write production-ready smart contracts for Ethereum blockchain with Solidity

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Product type Paperback
Published in Aug 2019
Publisher Packt
ISBN-13 9781839218262
Length 486 pages
Edition 1st Edition
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Author (1):
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Jitendra Chittoda Jitendra Chittoda
Author Profile Icon Jitendra Chittoda
Jitendra Chittoda
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Getting Started with Blockchain, Ethereum, and Solidity FREE CHAPTER
2. Introduction to Blockchain 3. Getting Started with Solidity 4. Control Structures and Contracts 5. Section 2: Deep Dive into Development Tools
6. Learning MetaMask and Remix 7. Using Ganache and the Truffle Framework 8. Taking Advantage of Code Quality Tools 9. Section 3: Mastering ERC Standards and Libraries
10. ERC20 Token Standard 11. ERC721 Non-Fungible Token Standard 12. Deep Dive into the OpenZeppelin Library 13. Using Multisig Wallets 14. Upgradable Contracts Using ZeppelinOS 15. Building Your Own Token 16. Section 4: Design Patterns and Best Practices
17. Solidity Design Patterns 18. Tips, Tricks, and Security Best Practices 19. Assessments 20. Other Books You May Enjoy

Creating custom reusable libraries

The libraries in Solidity are just like contracts, but they are deployed only once and their code is reused in the calling contracts. You can define libraries using the library keyword. Calls to the library functions use the DELEGATECALL opcode, which means that when a function on a library is called by the contract, only the code of the library function is executed in the context of the calling contract, and the storage of the calling contract is used and modified by the library. The library can have pure and view functions, which will be accessible directly from the calling contract because they do not initiate DELEGATECALL. You cannot destroy a deployed library.

When a library is linked to a contract, you can see that library as the implicit base contract of the contract and can access the functions defined in the library just by...

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