Old code gives "Unused parameter" error but never has before now
compiler-errors, objective-c, parameters, xcode4
Solution
Solution # 1)
In your Xcode project's "Build Settings", there's a parameter for "Unused Parameters".
Reset that from `YES` to `NO`.
Solution # 2 (available with Xcode 4):
In Xcode 4.3.2 or higher use `__unused`.
(THANKS to Tim Bodeit's comment below)
Solution # 3)
Put `#pragma unused (searchBar)` in your code, preferably right underneath the line in your implementation where the function is declared.
I.E.
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
#pragma unused (searchBar)
NSLog(@"Search Bar isn't used in this function");
}
Problem
I've opened up some old iOS code and when I try to build it I get an "unused parameter" error for code like this: ``` - (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar { NSLog(@"Search Bar isn't used in this function"); } ``` This is the first time I've ever seen an Objective-C compiler spit out errors (not warnings) for this. Since a lot of iOS calls don't necessarily use the passing arguments (examples being a lot of callbacks), I need help in getting rid of this.