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What are guard clauses? They're a way to implement the early return principle. Instead of returning a value, guard clauses throw an exception. There are many ways to implement guard clauses, and I'll show you three of them. So, make sure to watch the video until the end.

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Chapters
0:00 A simple Guard clause example
1:20 Writing a custom Guard clauses helper class
2:53 Cool feature: CallerArgumentExpression in C#
3:44 Exploring Ardalis.GuardClauses and Throw
5:38 Where should you use Guard clauses?
7:34 Use Guard clauses to enforce invariants