iphone - What does the "?" mean in the following statement -

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forgive "newbie" question, heck question mark, "?" mean in fololowing line of code?

self.navigationitem.leftbarbuttonitem.title = (editing) ?     nslocalizedstring(@"done", @"done") : nslocalizedstring(@"edit", @"edit");

this ternary statement, ? conditional operator. statement saying:

if (editing) {     self.navigationitem.leftbarbuttonitem.title = nslocalizedstring(@"done", @"done"); } else {     self.navigationitem.leftbarbuttonitem.title = nslocalizedstring(@"edit", @"edit"); }

you think of like:

? - if previous statement true, code after.

: - else / otherwise, run code after this.

you can read more here http://en.wikipedia.org/wiki/ternary_operation. find construct available in many languages other c / objective-c.


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