Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Object-Oriented Objective-C Getting Oriented - Object-Oriented, That Is Review NSDictionaries and NSMutableDictionaries

Aldrich Alviar
Aldrich Alviar
2,745 Points

NSDictionary

NSDictionary

variable_assignment.mm
NSDictionary*atrDict=@{
  @"Artist": @"Dali",
    @"Title": @"The Ship",
    @"Medium": @"Oil Paint";
}

1 Answer

Martin Wildfeuer
PLUS
Martin Wildfeuer
Courses Plus Student 11,071 Points

Create an NSDictionary called 'artDict', with the following key/value pairs: "Artist":"Dali", "Title":"The Ship", "Medium":"Oil Paint". Be sure to use the literal syntax.

First of all, you named your array atrDict instead of artDict, make sure to read the assignment carefully and check for typos.

Secondly, the trailing semicolon does belong at the end of the dictionary definition, not inside it.

Moreover, I'd recommend you use some spaces for readability :)

Therefore, the following should work:

NSDictionary *artDict = @{
    @"Artist": @"Dali",
    @"Title": @"The Ship",
    @"Medium": @"Oil Paint"
};

Hope that helps :)