
During July 2025, Andrea Bernardi focused on improving the Bag class in the supercollider/supercollider repository by addressing issues related to object mutation and copy behavior. Andrea implemented a robust deep copy method, Bag.copy, ensuring that in-place operations no longer altered the original Bag instance. This work involved careful use of object-oriented programming and data structure design in SuperCollider (SC), with targeted tests added to verify that union and difference operations remained non-mutating. The changes enhanced code reliability and maintainability, demonstrating a thoughtful approach to class library development and thorough testing to prevent regressions in future updates.
July 2025 monthly summary for supercollider/supercollider: Implemented robust Bag.deep copy path and non-mutating bag operations to prevent accidental mutations. Introduced Bag.copy API and added targeted tests to guard union/difference behavior. Fixed shallow copy issue and ensured in-place Bag operations do not alter source. Changes are captured in commits 4e041def208731efc71adb5285d6122b090edca7 and 936ebb952d412184c23ba476d9769e55e2e7b827.
July 2025 monthly summary for supercollider/supercollider: Implemented robust Bag.deep copy path and non-mutating bag operations to prevent accidental mutations. Introduced Bag.copy API and added targeted tests to guard union/difference behavior. Fixed shallow copy issue and ensured in-place Bag operations do not alter source. Changes are captured in commits 4e041def208731efc71adb5285d6122b090edca7 and 936ebb952d412184c23ba476d9769e55e2e7b827.

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