Function

CFDictionaryContainsValue

Returns a Boolean value that indicates whether a given value is in a dictionary.

Declaration

Boolean CFDictionaryContainsValue(CFDictionaryRef theDict, const void *value);

Parameters

theDict

The dictionary to examine.

value

The value for which to find matches in theDict. The value equal callback provided when the dictionary was created is used to compare. If the equal callback was NULL, pointer equality (in C, ==) is used. If value, or any other value in the dictionary, is not understood by the equal callback, the behavior is undefined.

Return Value

true if value is in the dictionary, otherwise false.

See Also

Examining a dictionary

CFDictionaryContainsKey

Returns a Boolean value that indicates whether a given key is in a dictionary.

CFDictionaryGetCount

Returns the number of key-value pairs in a dictionary.

CFDictionaryGetCountOfKey

Returns the number of times a key occurs in a dictionary.

CFDictionaryGetCountOfValue

Counts the number of times a given value occurs in the dictionary.

CFDictionaryGetKeysAndValues

Fills two buffers with the keys and values from a dictionary.

CFDictionaryGetValue

Returns the value associated with a given key.

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.