Popular "null" questions | Page 11

Java "?" Operator for checking null - What is it? (Not Ternary!)

I was reading an article linked from a slashdot story, and came across this little tidbit: Take the latest version …

java syntax null

MySQL CONCAT returns NULL if any field contain NULL

I have following data in my table "devices" affiliate_name affiliate_location model ip os_type os_version cs1 inter …

mysql sql null concat

How should we manage jdk8 stream for null values

Hello fellow Java developers, I know the subject may be a bit in advance as the JDK8 is not yet …

java null java-8 java-stream

IsNull function in DB2 SQL?

Is there a performant equivalent to the isnull function for DB2? Imagine some of our products are internal, so they …

sql null db2

SQL is null and = null

Possible Duplicate: what is “=null” and “ IS NULL” Is there any difference between IS NULL and =NULL What is the …

sql null

How to check for null in a single statement in scala?

In my scala code: QueueManager.add(getObject) where getObject is a method that returns an object of type QueueObject. def …

scala null inline

How to remove all the null elements inside a generic list in one go?

Is there a default method defined in .Net for C# to remove all the elements within a list which are …

c# list null element

Why does NULL = NULL evaluate to false in SQL server

In SQL server if you have nullParam=NULL in a where clause, it always evaluates to false. This is counterintuitive …

sql sql-server null

When should I use nil and NULL in Objective-C?

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

objective-c null nsnull

MongoDB: How to query for records where field is null or not set?

I have an Email document which has a sent_at date field: { 'sent_at': Date( 1336776254000 ) } If this Email has not …

mongodb null mongodb-query exists

Top "Null" questions