Simple Smart Contract with Owner Restriction
A foundational Solidity contract demonstrating access control via the `onlyOwner` modifier, allowing only the deployer to modify a stored variable.
Project Summary
This project serves as an essential exercise in Solidity, focusing on core concepts. It initializes a contract owner upon deployment and uses a custom `onlyOwner` modifier to secure the `setAngka` function, ensuring that sensitive state modifications are restricted. It also includes a basic `pure` function (`addNum`) for calculation practice.
My Role
Solidity Learner & Implementer: Focused on writing clean, secure code demonstrating mastery of modifiers and basic state management in Solidity.
Challenges
The core challenge was securely implementing the access restriction logic to protect the `angka` state variable, ensuring only the original deployer could execute the critical `setAngka` function.
Solution & Implementation
Implemented the `onlyOwner` modifier which utilizes `require(msg.sender == owner, ...)` to revert transactions from unauthorized addresses, standardizing access control, and improving code readability.
Main Features
- Owner-Controlled State Variable
- Custom `onlyOwner` Modifier
- Basic Pure Function (`addNum`)
- Secure Access Restriction