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!
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
What are the .m files used for, he is only using the .h class files
Code Junkie3,786 Points
.m files are called as implementation files. Whenever we declare methods related to class in the .h file then we use the .m file to write the full code for that method. I mean to say that function declarations can be done in .h and .m file both but the function definition can only be written in the .m file.
One more major difference is that the properties that you declare in the .h files are public and if you define a property in the .m file then they are private that is they cannot be accessed in any other file.