December 2013
Beginner
576 pages
16h 4m
English
Content preview from Programming in Objective-C, Sixth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,







O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Nested if Statements
In discussions of the general format of the if statement, we indicated that if the result of evaluating the expression inside the parentheses is true, the statement that immediately follows is executed. It is perfectly valid for this program statement to be another if statement, as in the following statement:
if ( [chessGame isOver] == NO ) if ( [chessGame whoseTurn] == YOU ) [chessGame yourMove];
If the value returned by sending the isOver message to chessGame is NO, the following statement is executed; this statement, in turn, is another if statement. This if statement compares the value returned from the whoseTurn method against YOU. If the two values are equal, the yourMove
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access