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David F. Cohen

PROFILE

David F. Cohen

During this period, contributed to the Qiskit/qiskit repository by delivering a targeted performance optimization and enhancing error handling in the quantum circuit module. Improved the QuantumCircuit.add_register method by removing a redundant name validation, reducing its time complexity from O(n) to O(1) and updating release documentation accordingly. Addressed error propagation by mapping RegisterNameExists errors into Python exceptions using the Python C-API, ensuring consistent error handling. Maintained release hygiene through documentation alignment and removal of redundant tests. The work demonstrated proficiency in Python, Rust, and performance optimization, focusing on stability, maintainability, and clear communication of technical changes.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

2Total
Bugs
1
Commits
2
Features
1
Lines of code
16
Activity Months1

Work History

July 2026

2 Commits • 1 Features

Jul 1, 2026

Month: 2026-07 — Qiskit/qiskit monthly update focusing on delivery, stability, and value. This period includes a high-impact performance optimization for QuantumCircuit.add_register and a robust error-handling improvement in the circuit module, plus release notes alignment and targeted test/maintenance activities.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture90.0%
Performance90.0%
AI Usage60.0%

Skills & Technologies

Programming Languages

No languages yet

Technical Skills

Error HandlingPerformance OptimizationPythonPython C-APIQuantum ComputingRust

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

Qiskit/qiskit

Jul 2026 Jul 2026
1 Month active

Languages Used

No languages

Technical Skills

Error HandlingPerformance OptimizationPythonPython C-APIQuantum ComputingRust