I want to create a NSDictionary with +[NSDictionary dictionaryWithObjectsAndKeys:]. One of my keys has a string but the string can sometimes be nil. If the string is nil, any other value key pairs ...

I am getting an array with null value. Please check the structure of my array below: ( "< null>" ) When I'm trying to access index 0 its crashing because of -[NSNull isEqualToString:]:...

I'm frequently finding the need to cache data structures created by NSJSONSerialization to disk and as -writeToFile fails if there are nulls, I need a fix that works when the structure is unknown. ...

Here's a context where I have seen that: NSMutableArray *controllers = [[NSMutableArray alloc] init]; for (unsigned i = 0; i < kNumberOfPages; i++) { [controllers addObject:[NSNull null]]; } ...

i have array of birthdates as array is getting filled from facebook so there are some friends whos birthdates are private so it contain NULL how to convert that array like empty string wherever the...

I am parsing a JSON response and trying to check if one of my keys is null. How would I go about this? I have the following: var routingNumber = (dic.value(forKey: "result") as! NSDictionary).valu...

I have this class/storyboard scene in a project that up to last night worked fine for the past 4 weeks i worked on it. I have managed to comment out practically everything and I still get the cras...

I have an NSDictionary that's populated from a JSON response from an API server. Sometimes the values for a key in this dictionary are Null I am trying to take the given value and drop it into the...

I have a piece of code that detects if a NSString is NULL, nil, etc. However, it crashes. Here is my code: NSArray *resultstwo = [database executeQuery:@"SELECT * FROM processes WHERE ready='yes' ...

I have a NSString object, NSString *aString; then are the two following versions equivalent? Version 1 : if ( (NSString *)[NSNull null] == aString ) { // Logic handling } Version 2 : if ( ...

This question is similar to this question, however this method only works on the root level of the dictionary. I'm looking to replace any occurrence of NSNull values with an empty string, so that ...

I want to know the difference between nil, NIL, and null. I've googled around and found this: nil -> null pointer to Objective-C object NIL -> null pointer to Objective-C class null -> nul...

I'm setting values for properties of my NSManagedObject, these values are coming from a NSDictionary properly serialized from a JSON file. My problem is, that, when some value is [NSNull null], I c...

I'm curious, I currently have an NSDictionary where some values are set to an NSNull object thanks to the help of json-framework. The aim is to strip all NSNull values and replace it with an empty ...

Below is a code block, that is supposed to test to see if a dictionary is null, and if it isn't, pull out the correct object. However, for some reason, despite the fact that the if check fails, the...

I'm writing an iOS App where i need to get data from a SQL-Database over mobile Services from Azure. After downloading the data I get a NSDictionary with all attributes from the SQL-Table. If an a...

Actually my question here is: are null and nil equivalent or not? I have an example but I am confused when they are equal when they are not. NSNull *nullValue = [NSNull null]; NSArray *arrayWithN...

I am develop a iPhone application, in which i need to use JSON to receive data from server. In the iPhone side, I convert the data into NSMutableDictionary. However, there is a date type data are...

This is sample code: NSDictionary *myDictionary = [NSDictionary dictionary]; NSNumber *myNumber = [myDictionary valueForKey: @"MyNumber"]; NSLog(@"myNumber = %@", myNumber); // output myNumber = (...