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Clarify how "x is null" evaluated for reference types #21630

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merged 1 commit into from Nov 19, 2020
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Clarify how "x is null" evaluated for reference types #21630

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2 changes: 1 addition & 1 deletion docs/csharp/language-reference/keywords/is.md
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Expand Up @@ -94,7 +94,7 @@ The following example shows a comparison of `null` checks:

[!code-csharp[is#11](../../../../samples/snippets/csharp/language-reference/keywords/is/is-const-pattern11.cs#11)]

The expression `x is null` is computed differently for reference types and nullable value types. For nullable value types, it uses <xref:System.Nullable%601.HasValue?displayProperty=nameWithType>. For reference types, it uses `x == null`.
The expression `x is null` is computed differently for reference types and nullable value types. For nullable value types, it uses <xref:System.Nullable%601.HasValue?displayProperty=nameWithType>. For reference types, it uses `(object)x == null`.

### var pattern

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