SnmpKit v0.3.3 Release Notes
Release Date: 2024-12-19
Version: 0.3.3
Git Tag: v0.3.3
🐛 Bug Fixes
Livebook Variable Scope Fix
This patch release fixes a critical issue in the interactive Livebook tour where variable scope was not properly managed across cells.
Issue Fixed
- Variable undefined error:
cable_modem_target
androuter_target
variables were not accessible in subsequent cells - Cell execution failures: Users experienced runtime errors when running cells sequentially
- Poor user experience: Broken examples interrupted the learning flow
Solution Implemented
- Explicit variable definitions: Added target definitions at the start of each relevant cell
- Consistent variable names: Ensured
cable_modem_target = "127.0.0.1:1161"
androuter_target = "127.0.0.1:1162"
are available - Cell independence: Each cell now works independently without relying on previous cell state
- Improved reliability: All code examples now execute successfully in any order
Files Modified
livebooks/snmpkit_tour.livemd
- Fixed variable scope across all cells
🔧 Technical Details
Variable Scope Pattern
Each cell that uses device targets now includes:
# Set targets for this cell
cable_modem_target = "127.0.0.1:1161"
router_target = "127.0.0.1:1162"
This ensures:
- ✅ Reliability - Cells execute successfully regardless of execution order
- ✅ Clarity - Variables are explicitly defined where used
- ✅ Maintainability - Easy to understand and modify
- ✅ User Experience - No unexpected variable errors
Quality Assurance
- ✅ All cells tested individually
- ✅ Sequential execution verified
- ✅ Variable definitions consistent
- ✅ No breaking changes to functionality
🚀 Upgrade Instructions
# Update your dependency
{:snmpkit, "~> 0.3.3"}
Migration: No code changes required for library usage. This only affects the Livebook tour experience.
📊 Impact
Before (v0.3.2)
- ❌ Variable scope errors in Livebook
- ❌ Cells failed when run out of order
- ❌ Poor learning experience
- ❌ Runtime errors interrupted tutorial flow
After (v0.3.3)
- ✅ All cells execute independently
- ✅ Clear variable definitions in each cell
- ✅ Smooth learning experience
- ✅ Reliable tutorial execution
🎯 What's Next
This patch ensures the Livebook tour provides a seamless educational experience. Future releases will focus on:
- Additional device simulation examples
- Enhanced MIB compilation tutorials
- Performance optimization guides
- Integration examples with monitoring platforms
Previous Release: v0.3.2 - Self-Contained Livebook Tour
Critical patch for optimal Livebook experience!
For questions or support, please visit the GitHub repository.