fix pattern matching exercise solution #2949

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mustafapc wants to merge 3 commits intogoogle:mainfrom

Commits on Oct 18, 2025

fix pattern matching exercise solution ,my solution works on more complex Expressions and Operations than the old one
mustafapc
committed
Refactor eval function and update Operation enum
mustafapc
authored
Implement PartialEq for Operation enum
mustafapc
authored