Course Description
- Design, code, execute and deploy a smart contract
- Foundational concepts of Solidity programming language will be covered.
- Value types, data structures, global variables and basic functions.
- Best practices for secure smart contract development, deployment and testing.
- Design and develope e2e web3.0 applications using industry standard tools.
Learning outcome
- Identify use of data types, data structures and global variables available in solidity.
- Able to deploy and interact with smart contract.
- Architect the decentralized application
- Analyze a given use case and design a smart-contract based solution
Course Outline (Smart Contracts)
Introduction to Smart Contracts
Solidity
Developing a smart contract
Evaluation and best practices for smart contract.
Evaluation
| Assessment |
Description |
Weightage |
| Participation |
In class participation in various activities |
10% |
| Lab-1 |
Smart contract and data types |
30% |
| Lab-2 |
Understanding global functions in solidity |
30% |
| Lab-3 |
Use of modifiers and error handling |
30% |
Developing a smart contract
Analyze the problem
- state variables and its visibility
- functions and its visibility
- access modifiers
- Validation of input params in the function
Objectives
-
Apply concepts learned in last lessons to write a smart contract
-
Analyze a problem statement to implement and design a smart contract.
-
Program smart contract using solidity language and Remix IDE
Problem Statement (Ballot Contract)
- A chairperson organizes this process
- Initialize proposal number while contract creation
- Chairperson registers all the voters
- Voters including the chairperson vote on the proposal
- Weight of two for the chairperson's vote
- Winning proposal is determined and announced to the world
DEMO
-
Represent design using class diagram
-
Implementing a smart contract based on design
Week 4 Day 1
Events
-
Concept of event
-
Pushing event to a subscribed listener
-
Demonstrate the event using ballot example
Week 4 Day 2
Time-elements
-
Add stages and time duration of stages to ballot contract in previous session
-
Add required logic to modify the stages in the function
Week 4 Day 3
Auditing a smart contract
-
Importance of smart contract audit
-
Review of smart contract analysis tools and best practices