Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Solidity Programming Essentials

You're reading from   Solidity Programming Essentials A beginner's guide to build smart contracts for Ethereum and blockchain

Arrow left icon
Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788831383
Length 222 pages
Edition 1st Edition
Languages
Concepts
Arrow right icon
Author (1):
Arrow left icon
Ritesh Modi Ritesh Modi
Author Profile Icon Ritesh Modi
Ritesh Modi
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Introduction to Blockchain, Ethereum, and Smart Contracts FREE CHAPTER 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 11. Other Books You May Enjoy

Constructors


Solidity supports declaring a constructor within a contract. Constructors are optional in Solidity and the compiler induces a default constructor when no constructor is explicitly defined. The constructor is executed once while deploying the contract. This is quite different from other programming languages. In other programming languages, a constructor is executed whenever a new object instance is created. However, in Solidity, a constructor is executed are deployed on EVM. Constructors should be used for initializing state variables and, generally, writing extensive Solidity code should be avoided. The constructor code is the first set of code that is executed for a contract. There can be at most one constructor in a contract, unlike constructors in other programming languages. Constructors can take parameters and arguments should be supplied while deploying the contract.

A constructor has the same name as that of the contract. Both the names should be the same. A constructor...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime