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# getRelationship(_:ofDirectoryAt:toItemAt:)

Determines the type of relationship that exists between a directory and an item.

```
func getRelationship(_ outRelationship: UnsafeMutablePointer<FileManager.URLRelationship>, ofDirectoryAt directoryURL: URL, toItemAt otherURL: URL) throws
```

## Parameters

`outRelationship`

A pointer to a variable in which to put the relationship between `directoryURL` and `otherURL`. For a list of possible values, see [`FileManager.URLRelationship`](/documentation/Foundation/FileManager/URLRelationship).

`directoryURL`

The URL of the directory that potentially contains the item in `otherURL`. The URL in this parameter must specify a directory. This parameter must not be `nil`.

`otherURL`

The URL of the file or directory whose relationship to `directoryURL` is being tested. This parameter must not be `nil`.

## Discussion

Use this method to determine the relationship between an item and a directory whose location you already know. If the relationship between the items is determined successfully, this method sets the value of the `outRelationship` parameter to an appropriate value. The directory may contain the item, it may be the same as the item, or it may not have a direct relationship to the item.

> Handling Errors in Swift:
> In Swift, this method returns `Void` and is marked with the `throws` keyword to indicate that it throws an error in cases of failure.
> 
> You call this method in a `try` expression and handle any errors in the `catch` clauses of a `do` statement, as described in [Error Handling](https://docs.swift.org/swift-book/LanguageGuide/ErrorHandling.html) in [The Swift Programming Language](https://docs.swift.org/swift-book/) and `About Imported Cocoa Error Parameters`.

---

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