2018-10-12 15:37:13 -04:00
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---
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title: is
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---
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## is
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The `is` keyword checks if an object is compatible with a given type, or (starting with C# 7) tests an expression against a pattern.
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2018-12-11 01:08:53 +02:00
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## Example
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```csharp
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int number = 6;
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Console.WriteLine(number is long); // False
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Console.WriteLine(number is double); // False
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Console.WriteLine(number is int); // True
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```
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2018-10-12 15:37:13 -04:00
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#### More information:
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- [C# Reference: is](https://docs.microsoft.com/dotnet/csharp/language-reference/keywords/is)
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