NSMutableDictionary setValue forKey example in Objective C (iOS).

NSMutableDictionary setValue forKey

Adds a given key-value pair to the dictionary.

- (void)setValue:(id)value forKey:(NSString *)key

Parameters of [NSMutableDictionary setValue forKey]
value
The value for key.
key
The key for value. Note that when using key-value coding, the key must be a string (see “Key-Value Coding Fundamentals”).

Discussion of [NSMutableDictionary setValue forKey]
This method adds value and key to the dictionary using setObject:forKey:, unless value is nil in which case the method instead attempts to remove key using removeObjectForKey:.

NSMutableDictionary setValue forKey example.

NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];
[parameters setValue:[NSNumber numberWithBool:news] forKey:@"news"];
[parameters setValue:[NSNumber numberWithBool:mails] forKey:@"mails"];

End of NSMutableDictionary setValue forKey example article.