Updated in May 2025.

This course now features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course. Dive deep into Solidity's core data structures in this advanced course that builds on foundational knowledge of smart contract programming. Starting with constructors, you'll explore how to initialize smart contracts and manage state variables. The course transitions to mastering arrays in Solidity, covering crucial methods like push, pop, and length, as well as array manipulation techniques such as deletion and compacting arrays. Next, you’ll learn to work with enums, structs, and mappings, essential components for creating more complex and efficient smart contracts. The course includes hands-on exercises to practice writing custom data types and associating values with mappings, and you'll solve real-world coding challenges along the way. Enums and structs are covered in detail, showing how to group data and define custom types, preparing you to write more structured and maintainable contracts. Lastly, the course dives into nested mappings and the assignment of structs within mappings, a powerful tool for developing scalable and secure contracts. By the end, you will have mastered the tools needed to work with advanced Solidity data structures, laying a solid foundation for further exploration of blockchain development. This course is designed for developers with a basic understanding of Solidity and blockchain development. Prerequisites include familiarity with smart contracts, basic Solidity syntax, and introductory data structures.

Updated in May 2025.

This course now features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course. In the rapidly evolving world of blockchain technology, mastering Solidity is crucial for developing secure and efficient smart contracts. This advanced course takes you beyond the basics, guiding you through complex Solidity concepts and the intricacies of secure contract development. Each module is meticulously designed to deepen your understanding of Solidity, from recognizing common vulnerabilities to implementing robust security measures. The course begins with essential advice on approaching new Solidity concepts, gradually leading you through advanced topics such as looping and transactions, points of failure in contracts, and the significance of safe contract design. You'll explore critical issues like whether contracts should be allowed to receive funds and how to protect them from common exploits. Through a combination of theoretical insights and practical exercises, you will learn to recognize, analyze, and mitigate security risks in smart contracts. As you progress, you’ll engage with hands-on coding exercises that solidify your learning, including creating and securing smart contracts, understanding complex patterns like the "Only After" modifier, and mastering advanced concepts such as inheritance and abstract contracts. By the end of this course, you’ll not only be proficient in Solidity but also equipped with the skills to develop secure, high-performing blockchain applications. This course is tailored for experienced developers familiar with basic Solidity concepts who are looking to advance their skills in secure smart contract development. Prerequisites include a solid understanding of fundamental Solidity, blockchain principles, and some experience with writing and deploying smart contracts.