Learn HASKELL with Real Code Examples
Updated Nov 18, 2025
Performance Notes
Use strictness annotations
Benchmark with Criterion
Avoid unnecessary laziness
Use optimized data structures (Vector, Text)
Security Notes
Use typed APIs to prevent injection
Avoid unsafePerformIO
Restrict side effects using monads
Follow proper package versioning
Monitoring Analytics
EKG metrics
Profiling via GHC tools
Logging frameworks
Performance tuning via RTS flags
Code Quality
Use hlint
Use ormolu or stylish-haskell
Prefer pure functions
Use type signatures everywhere