Immutability is a cornerstone of robust distributed systems, but achieving it in C# has historically required copious boilerplate. C# 9.0 introduces Records, a first-class citizen for immutable data. Records provide value-based equality, non-destructive mutation, and concise syntax. The Syntax Evolution Value-Based Equality Records check equality by properties, not reference. Non-Destructive Mutation (‘with’ expressions) To modify […]
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