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# CFDictionaryGetValueIfPresent(_:_:_:)

Returns a Boolean value that indicates whether a given value for a given key is in a dictionary, and returns that value indirectly if it exists.

```
func CFDictionaryGetValueIfPresent(_ theDict: CFDictionary!, _ key: UnsafeRawPointer!, _ value: UnsafeMutablePointer<UnsafeRawPointer?>!) -> Bool
```

## Parameters

`theDict`

The dictionary to examine.

`key`

The key for which to find a match in `theDict`. The key hash and equal callbacks provided when the dictionary was created are used to compare. If the hash callback was `NULL`, `key` is treated as a pointer and converted to an integer. If the equal callback was `NULL`, pointer equality (in C, ==) is used. If `key`, or any of the keys in `theDict`, is not understood by the equal callback, the behavior is undefined.

`value`

A pointer to memory which, on return, is filled with the pointer-sized value if a matching key is found. If no key match is found, the contents of the storage pointed to by this parameter are undefined. This value may be `NULL`, in which case the value from the dictionary is not returned (but the return value of this function still indicates whether or not the key-value pair was present). If the value is a Core Foundation object, ownership follows the [The Get Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-SW1).

## Return Value

`true` if a matching key was found, otherwise `false`.

## Discussion

---

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