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# FSDirectoryVerifier

A tool to detect whether the directory contents changed since the last call to enumerate a directory.

```
struct FSDirectoryVerifier
```

## Overview

Your implementation of [`enumerateDirectory(_:startingAt:verifier:attributes:packer:replyHandler:)`](/documentation/FSKit/FSVolume/Operations/enumerateDirectory(_:startingAt:verifier:attributes:packer:replyHandler:)) defines the semantics of this value; it’s opaque to FSKit.

## Topics

### Initializing a verifier

[`init(_:)`](/documentation/FSKit/FSDirectoryVerifier/init(_:))

[`init(rawValue:)`](/documentation/FSKit/FSDirectoryVerifier/init(rawValue:))

### Using defined verifier values

[`initial`](/documentation/FSKit/FSDirectoryVerifier/initial)

The constant initial value for the directory-enumeration verifier.


---

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