Learn MODULA3 with Real Code Examples
Updated Nov 21, 2025
Practical Examples
Building a modular text editor
Implementing a concurrent server
Designing a compiler front-end
Developing network protocol simulations
Prototyping educational systems programming exercises
Troubleshooting
Check module import paths
Ensure interface and implementation match
Resolve type mismatches using compiler feedback
Debug concurrency issues with threads and monitors
Use compiler warnings to catch potential runtime errors
Testing Guide
Write test modules for each interface
Use exception handling to test error cases
Validate object behavior and method contracts
Check concurrent thread execution
Verify module linking and compilation
Deployment Options
Compiled native binaries
Executable modules for research projects
Educational software for teaching modular programming
Cross-platform deployment with compatible runtime
Library modules for reuse in larger projects
Tools Ecosystem
DEC SRC Modula-3 compiler
m3 compiler from various distributions
Standard Modula-3 libraries
Debugger tools integrated with compiler
Community-contributed modules and examples
Integrations
System-level libraries
Networking and file I/O
GUI libraries via bindings (X11 or custom)
Compiler toolchains for low-level operations
Educational frameworks for modular programming
Productivity Tips
Plan module interfaces before implementation
Leverage garbage collection for memory safety
Encapsulate state in modules and objects
Use concurrency primitives efficiently
Document modules to ease maintenance
Challenges
Create a small modular calculator
Develop a simple concurrent server
Implement an object-oriented library
Design a mini compiler front-end
Build a modular GUI prototype (optional)