erlang/otp
Jan 2025 – Feb 2026
2 Months active
Languages Used
Erlang
Technical Skills
Erlangcompiler designfunctional programmingSoftware DevelopmentVersion Controlcompiler optimization
Michał Muskała
PROFILE
Michał Muskała
Contributed core language enhancements to the erlang/otp repository by implementing multi-valued comprehensions for lists and maps, enabling flatmap-like semantics and reducing boilerplate in data transformation code. Leveraged Erlang and functional programming principles to design and document this feature as part of EEP 78, providing clear usage examples and laying the foundation for broader adoption. Further improved map handling by standardizing element ordering in large hashmaps and optimizing map comprehensions with constant values through compiler rewrites. Demonstrated expertise in compiler optimization, version control, and erts internals, delivering robust, well-tested improvements that increased reliability and performance in map-heavy code paths.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
4,362,953
Activity Months2
Your Network
174 peopleShared Repositories
174
Work History
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for erlang/otp: Delivered two performance and consistency improvements to map handling: deterministic hashmap iteration across all map operations and a compiler optimization for constant-valued map comprehensions. These changes improve reliability, predictability, and runtime efficiency in map-heavy codepaths.
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for erlang/otp: Delivered two performance and consistency improvements to map handling: deterministic hashmap iteration across all map operations and a compiler optimization for constant-valued map comprehensions. These changes improve reliability, predictability, and runtime efficiency in map-heavy codepaths.
February 2026
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered Multi-valued Comprehensions for List and Map in erlang/otp as part of EEP 78. This feature enables emitting multiple elements per iteration, effectively providing a flatmap-like capability with a fixed output layout and reducing boilerplate across data transformations. The change is captured in commit 0f89fa2be768427c0c364f5e4479d3a891875c29, including design notes and usage examples. Major bugs fixed: None reported in this scope; focus was on feature implementation, validation, and documentation. Overall impact: Enhances language expressiveness, lowers boilerplate, and accelerates development of complex data pipelines within OTP repositories. Lays groundwork for broader adoption of multi-valued comprehensions across OTP codebase. Technologies/skills demonstrated: Erlang/OTP, functional programming patterns, EEP-driven feature design, documentation and example-driven communication, and contribution to core language features.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered Multi-valued Comprehensions for List and Map in erlang/otp as part of EEP 78. This feature enables emitting multiple elements per iteration, effectively providing a flatmap-like capability with a fixed output layout and reducing boilerplate across data transformations. The change is captured in commit 0f89fa2be768427c0c364f5e4479d3a891875c29, including design notes and usage examples. Major bugs fixed: None reported in this scope; focus was on feature implementation, validation, and documentation. Overall impact: Enhances language expressiveness, lowers boilerplate, and accelerates development of complex data pipelines within OTP repositories. Lays groundwork for broader adoption of multi-valued comprehensions across OTP codebase. Technologies/skills demonstrated: Erlang/OTP, functional programming patterns, EEP-driven feature design, documentation and example-driven communication, and contribution to core language features.
Activity
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Quality Metrics
Correctness100.0%
Maintainability86.6%
Architecture100.0%
Performance93.4%
AI Usage33.4%
Skills & Technologies
Programming Languages
Erlang
Technical Skills
ErlangSoftware DevelopmentVersion Controlcompiler designcompiler optimizationfunctional programming
Repositories Contributed To
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