Jon Skeet • 7/29/2025

Records and the ‘with’ operator, redux

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This technical blog post examines a subtle and debated behavior of C# record types with the 'with' operator. The author contrasts their initial mental model with the language's documented behavior, referencing insights from Eric Lippert. The article details practical solutions for avoiding this trap, including the use of Roslyn analyzers and changes to a codebase, making it a deep dive into C# language design and best practices.

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#c #Immutability #Records
Records and the ‘with’ operator, redux

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