CODEWITHSUNDEEP
iosobjective-ciphone
Gurpreet Singh
Gurpreet Singh

Reputation: 953

NSArray and NSInteger Comparison

NSArray *array=[[NSArray alloc] initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10", nil];

NSNumber *j = @(1);

for(id i in array) {

    if ([i isEqual:j])// always executes an else..I don't know why
    {
        NSLog(@"This object is matching %@",i);
    }
    else
    {
        NSLog(@"This Object is missing %@",i);
    }
    j = @([j intValue] + 1);
}

the code always executes the else. I don't know why. I want to check the array elements whether some missing in a list or not

Upvotes: 1

Views: 111

Answers (2)

shallowThought
shallowThought

Reputation: 19602

You are comparing NSStrings from your array with the NSNumber j, so the comparison always fails

One way would be to use the stringValue of j instead:

NSArray *array = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10"];

NSNumber *j = @(1);

for(NSString *i in array)
{
    if ([i isEqualToString:j.stringValue])
    {
        NSLog(@"This object is matching %@",i);            
    }
    else
    {
        NSLog(@"This Object is missing %@",i);            
    }
}

Upvotes: 1

luk2302
luk2302

Reputation: 57114

You are putting strings in your array using @"...", but you should put in integers:

NSArray *array=[[NSArray alloc] initWithObjects:@1,@2,@3,@4,@5,@6,@7,@8,@9,@10, nil];

Upvotes: 1

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