Data
Reader small image

You're reading from  Solidity Programming Essentials. - Second Edition

Product typeBook
Published inJun 2022
PublisherPackt
ISBN-139781803231181
Edition2nd Edition
Concepts
Blockchain
Right arrow
Author (1)
Ritesh Modi
Ritesh Modi
author image
Ritesh Modi

Ritesh Modi is a technologist with more than 18 years of experience. He holds a master's degree in science in AI/ML from LJMU. He has been recognized as a Microsoft Regional Director for his contributions to building tech communities, products, and services. He has published more than 10 tech books in the past and is a cloud architect, speaker, and leader who is popular for his contributions to data centers, Azure, Kubernetes, blockchain, cognitive services, DevOps, AI, and automation.
Read more about Ritesh Modi

Right arrow

Abstract contracts

Abstract contracts are contracts that have partial function definitions. You cannot create an instance of an abstract contract. An abstract contract must be inherited by a child contract to utilize its functions.

Abstract contracts help in defining the structure of a contract, and any class inheriting from it must ensure to provide an implementation for them. If the child contract does not provide the implementation for incomplete functions, its instance cannot be created. The function signature is terminated using a semicolon (;). Solidity provides an abstract keyword to mark a contract as abstract. This is a relatively new keyword addition and it was not part of prior versions. A contract becomes an abstract contract when it consists of functions without any implementation.

The following code snippet is an implementation of an abstract contract.

The abstractHelloWorld contract is an abstract contract as it contains a couple of functions without any...

lock icon
The rest of the page is locked
Previous Page
Chapter 9 of 21, Page 12
Next Page
You have been reading a chapter from
Solidity Programming Essentials. - Second Edition
Published in: Jun 2022Publisher: PacktISBN-13: 9781803231181
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Ritesh Modi

Ritesh Modi is a technologist with more than 18 years of experience. He holds a master's degree in science in AI/ML from LJMU. He has been recognized as a Microsoft Regional Director for his contributions to building tech communities, products, and services. He has published more than 10 tech books in the past and is a cloud architect, speaker, and leader who is popular for his contributions to data centers, Azure, Kubernetes, blockchain, cognitive services, DevOps, AI, and automation.
Read more about Ritesh Modi

Personalised recommendations for you

Based on your interests and search pattern

Et al.

Et al.

Ever wonder why speech recognition systems don't understand the Scottish accent, or what would happen if an astronaut only ate mac 'n' cheese, or other spurious reflections you'd have at a bar? We did, then collated those deliberations into absurd research articles with fake figures and methodologies inspired by even more fictionally absurd studies.

BookAug 2023230 pages5
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages4
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages5
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages1
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages5
Mastering Tableau 2023

Mastering Tableau 2023

This book is a comprehensive resource to mastering your Tableau skills and becoming a BI expert. As you progress, you will learn how to build advanced dashboards and improve your storytelling to derive key business insight, as well as make you well-versed with advanced functionalities of Tableau in the business intelligence domain.

BookAug 2023684 pages
Building AI Applications with ChatGPT APIs

Building AI Applications with ChatGPT APIs

This guide covers all ChatGPT API features for effortless creation of robust AI powered apps. With its help, you’ll be able to leverage ChatGPT’s cutting-edge NLP models to take your app development skills to the next level. You’ll also work on ten exciting projects that will give you the practical know-how that you can apply to your existing applications.

BookSep 2023258 pages5
Building AI Applications with ChatGPT APIs

Building AI Applications with ChatGPT APIs

This guide covers all ChatGPT API features for effortless creation of robust AI powered apps. With its help, you’ll be able to leverage ChatGPT’s cutting-edge NLP models to take your app development skills to the next level. You’ll also work on ten exciting projects that will give you the practical know-how that you can apply to your existing applications.

BookSep 2023258 pages2
Data Engineering with AWS

Data Engineering with AWS

Embark on a journey to master data engineering pipelines on AWS! Our book offers a hands-on experience of AWS services for ingesting, transforming, and consuming data. Whether you're an absolute beginner or someone with basic data engineering experience, this guide is an indispensable resource.

BookOct 2023636 pages5
Modern Data Architecture on AWS

Modern Data Architecture on AWS

Every organization wants an agile, performant, and cost-effective data platform that meets all their current and future business needs. Purpose-built AWS analytics services and their features play a big part in building such a modern data platform. This book brings to you all the design and architectural patterns that’ll help you achieve this goal.

BookAug 2023420 pages5
Practical Guide to Applied Conformal Prediction in Python

Practical Guide to Applied Conformal Prediction in Python

Discover the power of Conformal Prediction with the "Practical Guide to Applied Conformal Prediction in Python." Master the latest techniques to quantify uncertainty in machine learning and computer vision models, and seamlessly apply them to your industry applications.

BookDec 2023240 pages
TinyML Cookbook

TinyML Cookbook

With over 70 project-based recipes, the TinyML Cookbook is a practical guide that will help you to get the most out of your microcontrollers. It provides a comprehensive understanding of the theoretical foundations while giving you hands-on experience training ML models for deployment on Arduino Nano 33 BLE Sense, Raspberry Pi Pico, and SparkFun RedBoard Artemis Nano microcontrollers.

BookNov 2023664 pages