How do I enforce null checking?
64332
avoiding null reference exceptions
155686
What is a reason of placing boolean or null before comparison operator?
8878
How to ignore a property in class if null, using json.net
16236
Is it possible to enforce unique values in a column, excluding nulls?
128709
Why is there a `null` value in JavaScript?
36270
Nullable type issue with ?: Conditional Operator
90598
PHP considers null is equal to zero
110077
Is it good practice to NULL a pointer after deleting it?
158391
Most efficient way to check for DBNull and then assign to a variable?
55830
What's the rationale for null terminated strings?
90161
What does [param: NotNull] mean in C#?
48235
Setting Objects to Null/Nothing after use in .NET
156262
One step check for null value & emptiness of a string
151469
What is the difference between null and System.DBNull.Value?
138823
Why cast null to Object?
118970
How do I include nulls during comparisons in SQL Server?
67597
Can constructor return a null object?