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Fix typo in example: s/Box/Unbox/ #2700

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Jul 9, 2019
Merged

Fix typo in example: s/Box/Unbox/ #2700

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4 changes: 2 additions & 2 deletions xml/System.Runtime.CompilerServices/Unsafe.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -1111,7 +1111,7 @@ The `Unbox<T>` method is simply a wrapper for the IL [unbox](xref:System.Reflect
The `Unbox<T>` method has an important usage constraint that is not enforced by language compilers and that is the responsibility of the caller. The IL `unbox` instruction returns a controlled-mutability managed pointer. Because .NET and .NET language compilers cannot represent this constraint, the `Unbox<T>` method returns a normal mutable `ref T`. However developers **must not** mutate the returned reference unless they are certain that `T` is a mutable struct type. For example, because the numeric primitives such as <xref:System.Int32> are not mutable struct types, the following code is not suppported:

```csharp
Unsafe.Box<int>(obj) = 30;
Unsafe.Unbox<int>(obj) = 30;
```

In contrast, a type such as <xref:System.Drawing.Point?<displayProperty=nameWithType> is a mutable struct with public property setters, so the following code is supported:
Expand Down Expand Up @@ -1245,4 +1245,4 @@ For more information, see sections III.1.8.1.2.2 ("Controlled-muttability manage
</Docs>
</Member>
</Members>
</Type>
</Type>