How to check if an object is the last object on NSArray - objective-c

Question

How can I check if an object in the last object on an NSArray?
I've tried:
if ([currentStore isEqual:[Stores lastObject]])
{
//Code
}
but it didn't work.
Any idea?
Thanks!

Answer 1

or try this
BOOL lastElement = false;
NSUInteger index = [stores indexOfObject:currentStore];
if (index != NSNotFound)
{
lastElement = (index == [stores count] - 1);
}

Answer 2

Bit modified try this:
NSUInteger index = [stores indexOfObject:currentStore];
if (index == ([stores count]-1))
{
NSLog(#"Yes its Last");
}

Answer 3

If you didn't override isEqual method, the base class implementation of NSObject::isEqual only check if both pointers points to the same address.
This excellent article http://nshipster.com/equality/ explain objc equality principles
The below sample logs - Testing Stores - works fine
#interface Stores : NSObject
#property (strong, nonatomic) NSString* name;
- (instancetype) initWithName:(NSString*) name;
#end
#implementation Stores
- (instancetype) initWithName:(NSString*) name;
{
_name = name;
return self;
}
- (BOOL)isEqualToStores:(Stores*) Stores
{
if (!Stores)
return NO;
if (![_name isEqualToString:Stores.name] )
return NO;
return YES;
}
- (BOOL)isEqual:(id)object
{
if (self == object)
{
return YES;
}
if (![object isKindOfClass:[Stores class]])
{
return NO;
}
return [self isEqualToStores:(Stores *)object];
}
#end
-(void) testStores
{
Stores* last = [[Stores alloc] initWithName:#"5"];
NSArray* arr = #[
[[Stores alloc] initWithName:#"1"],
[[Stores alloc] initWithName:#"2"],
[[Stores alloc] initWithName:#"3"],
[[Stores alloc] initWithName:#"4"],
[[Stores alloc] initWithName:#"5"]
//last
];
if ([last isEqual:[arr lastObject]])
{
NSLog(#"Testing Stores - works fine");
}
else
{
NSLog(#"Testing Stores - opps!?1?!?");
}
}