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hamza zeryouh
hamza zeryouh

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C# Language Trick – Pattern Matching

#programming #dotnet #azure #beginners

🔥 This C# 9+ feature can replace multiple if statements

Instead of:

if (shape is Circle c) { /* ... */ } else if (shape is Rectangle r) { /* ... */ } else if (shape is Triangle t) { /* ... */ }
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Do this:

var area = shape switch { Circle c => Math.PI * c.Radius * c.Radius, Rectangle r => r.Width * r.Height, Triangle t => t.Base * t.Height / 2, _ => throw new ArgumentException("Unknown shape") };
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Benefits:

More readable
Safer (compiler checks exhaustiveness)
Easier to maintain

What’s your favorite modern C# feature?

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