So I have an array with some objects (NSString, NSNumber, etc.) and I want to loop through it using a for loop. I thought I'd use the id for the type.
NSArray *myArray = [[NSArray alloc] initWithObjects:@"one string",@"another", @3, nil];
for (id *something in myArray) {
....
}
What's wrong with the for loop above? Why can't I use id and what would be the appropriate "type" to use.
I am a begginer in iOS dev.
id is intrinsically a pointer, hence all you need is:
for(id something in myArray) {
btw, using the constant object syntax makes such code more legible:
@[ @"one string", @"another", @3 ]
something as a format argument to NSLog?
NSLog(someNsString)... in which case you should instead NSLog(@"%@", someNsString);. The issue is one of safety, assuming you would notice if a string literal had incorrect % flags, but you wouldn't notice if an NSString had them (and having them can cause code to, for example, crash).NSLog(something). Thank you very much @mah and @davidid as a type already is a pointer, so id * is a pointer to a pointer, which is incorrect here. Try this:
for (id something in myArray) {
}