Knowledge Bank
Smart contracts
Understanding smart contract development and best practices
Smart contracts
Smart contracts are self-executing contracts with terms directly written into code.
Core concepts
Contract Structure
- State variables
- Functions
- Events
- Modifiers
Contract Types
- Standard contracts
- Library contracts
- Interface contracts
- Proxy contracts
Development lifecycle
1. Design
- Requirements analysis
- Architecture planning
- Security considerations
- Gas optimization
2. Implementation
- Code writing
- Testing
- Documentation
- Optimization
3. Deployment
- Network selection
- Gas estimation
- Contract verification
- Initial setup
Security considerations
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Common Vulnerabilities
- Reentrancy
- Integer overflow
- Access control
- Front-running
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Best Practices
- Checks-Effects-Interactions
- Pull over Push
- Emergency stops
- Access controls
Testing & verification
Unit testing
- Function testing
- State changes
- Event emissions
- Error conditions
Integration testing
- Contract interactions
- System workflows
- Edge cases
- Gas optimization
Always audit smart contracts thoroughly before deployment to production networks.