ConSol-Lab/Pumpkin
Jan 2025 – Feb 2025
2 Months active
Languages Used
Rust
Technical Skills
Compiler DesignConstraint ProgrammingDomain ManagementRustSolver DevelopmentAlgorithm Improvement
Robbin Baauw
PROFILE
Robbin Baauw
Worked on the ConSol-Lab/Pumpkin repository to enhance constraint programming workflows by improving both performance and reliability. Focused on refactoring the Flatzinc parser in Rust to use parsed literals directly, which reduced unnecessary variable creation and improved efficiency in constraint construction. Implemented domain post-processing to maintain consistency and prevent overflows during minimization. Extended the parser to support boolean arrays and negative integers, broadening modeling capabilities and strengthening propagation correctness. Addressed a bug in the element propagator to ensure accurate handling of partially assigned indices. Emphasized compiler design, parsing, and solver development to deliver robust, production-ready constraint solving features.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
4Total
Bugs
2
Commits
4
Features
2
Lines of code
187
Activity Months2
Your Network
5 peopleWork History
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 concentrated on improving the robustness and reliability of Pumpkin's modeling flow. Key outcomes include enhancements to the Flatzinc parser to support boolean arrays and negative integers, and a bug fix in the element propagator when the index is only partially assigned. These changes broaden modeling capabilities, improve propagation correctness, and strengthen test coverage.
2 Commits • 1 Features
Feb 1, 2025February 2025 concentrated on improving the robustness and reliability of Pumpkin's modeling flow. Key outcomes include enhancements to the Flatzinc parser to support boolean arrays and negative integers, and a bug fix in the element propagator when the index is only partially assigned. These changes broaden modeling capabilities, improve propagation correctness, and strengthen test coverage.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Key development outcomes for ConSol-Lab/Pumpkin: delivered performance-oriented updates to constraint construction and ensured domain reliability through post-processing improvements. Focused on reducing unnecessary variables, boosting parser efficiency, and strengthening domain consistency to support safer minimization.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Key development outcomes for ConSol-Lab/Pumpkin: delivered performance-oriented updates to constraint construction and ensured domain reliability through post-processing improvements. Focused on reducing unnecessary variables, boosting parser efficiency, and strengthening domain consistency to support safer minimization.
Activity
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Quality Metrics
Correctness87.6%
Maintainability80.0%
Architecture80.0%
Performance77.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
Rust
Technical Skills
Algorithm ImprovementCompiler DesignConstraint ProgrammingData StructuresDomain ManagementParsingRegular ExpressionsRustSolver Development
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