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# CMAttachmentBearerAttachments

A structure that contains attachments.

```
struct CMAttachmentBearerAttachments
```

## Topics

### Inspecting Attachments

[`var propagated: [String : Any]`](/documentation/CoreMedia/CMAttachmentBearerAttachments/propagated)

A dictionary of attachments to copy when propagating attachments from one object to another.

[`var nonPropagated: [String : Any]`](/documentation/CoreMedia/CMAttachmentBearerAttachments/nonPropagated)

A dictionary of attachments to not copy when propagating attachments from one object to another.

### Accessing Attachments

[`subscript(String) -> CMAttachmentBearerAttachments.Value?`](/documentation/CoreMedia/CMAttachmentBearerAttachments/subscript(_:)-8uau0)

Gets the value associated with the specified attachment.

[`subscript(CMSampleBuffer.AttachmentKey) -> CMAttachmentBearerAttachments.Value?`](/documentation/CoreMedia/CMAttachmentBearerAttachments/subscript(_:)-74jgw)

Gets the value associated with the specified attachment key.

[`enum Value`](/documentation/CoreMedia/CMAttachmentBearerAttachments/Value)

An enumeration of attachment values.

### Managing Attachments

[`func merge([String : Any], mode: CMAttachmentBearerAttachments.Mode)`](/documentation/CoreMedia/CMAttachmentBearerAttachments/merge(_:mode:))

Sets a collection of attachments on the object.

[`enum Mode`](/documentation/CoreMedia/CMAttachmentBearerAttachments/Mode)

An enumeration that defines the available attachment modes.

[`func removeAll()`](/documentation/CoreMedia/CMAttachmentBearerAttachments/removeAll())

Removes all attachments from this object.


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