csharp / beginner
Snippet
Guard Clauses for State Integrity
Using guard clauses at the beginning of a function helps prevent bugs by ensuring inputs are valid before any logic is executed.
snippet.cs
csharp
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public void UpdateAge(int newAge) {if (newAge < 0 || newAge > 120) {throw new System.ArgumentException("Age out of valid range.");}// Proceed with logic}
Breakdown
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if (newAge < 0 || newAge > 120)
Checks if the input violates the business rules early.
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throw new ...
Halts execution immediately if the validation fails, protecting the rest of the code.