Add Values to existing NSDictionary From a method

Question

I'm trying to work on the key pair: value of an NSDictionary. I need to be able to add other key: value to this NSDictionary from another method. In Swift there is dictionary.forEach ({values [$ 0] = $ 1}) but I do not know how to do it for objective C. Can you give me an example of how to insert other values from another method into an existing NSDictionary?

NSDictionary *dictionary = @{
                             kMessageFromID : currentUserID,
                             kMessageToID : recipientID,
                             kMessageTimeStamp : [NSNumber numberWithInteger:NSDate.new.timeIntervalSince1970],

                             };

Answer 1

NSMutableDictionary has a method to merge key value pairs from another dictionary.

- (void)addEntriesFromDictionary:(NSDictionary<KeyType, ObjectType> *)otherDictionary;

You can also do fast enumeration on an NSDictionary which is comparable to forEach method of Swift.Dictionary

NSMutableDictionary *mutableDict = ...;

for (NSString *key in dictionary) {
    id value = dictionary[key];
    mutableDict[key] = value;
}