map Add in Objective-C

To add an element to a hash in Objective-C, you can use the setObject:forKey: method of the NSMutableDictionary class. Here's an example:

``objective-c NSMutableDictionary *myHash = [[NSMutableDictionary alloc] init];


// Add a new element to the hash with key-value pair

[myHash setObject:@"value" forKey:@"key"];



In this example, a new NSMutableDictionary object is created and stored in the variable myHash. The setObject:forKey: method is then used to add a new element to the hash, with key "key" and value "value".
You can also add multiple elements to the hash at once using the addEntriesFromDictionary: method. Here's an example:

objective-c

NSMutableDictionary *myHash = [[NSMutableDictionary alloc] init];

// Add multiple key-value pairs to the hash NSDictionary *newEntries = @{@"key1": @"value1", @"key2": @"value2"}; [myHash addEntriesFromDictionary:newEntries];`

In this example, the addEntriesFromDictionary: method is used to add multiple key-value pairs to the hash at once, via an NSDictionary object newEntries. The hash now contains two elements with keys "key1" and "key2", and corresponding values "value1" and "value2"`.

map Add in Objective-C

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