query: C# How to check if an object is nullable
positive_passages.docid: 20892
positive_passages.text: C# nullable string error
negative_passages.docid: 79477
negative_passages.text: Why is "null" present in C# and Java?
negative_passages.docid: 5377
negative_passages.text: Is there a standard function to check for null, undefined, or blank variables in JavaScript?
negative_passages.docid: 155910
negative_passages.text: How do I iterate over the properties of an anonymous object in C#?
negative_passages.docid: 63521
negative_passages.text: How to pass a nullable type to a P/invoked function
negative_passages.docid: 92187
negative_passages.text: Unable to cast object of type 'System.DBNull' to type 'System.String`
negative_passages.docid: 2146
negative_passages.text: object==null or null==object?
negative_passages.docid: 75247
negative_passages.text: Convert string to nullable type (int, double, etc...)
negative_passages.docid: 150276
negative_passages.text: Is there a Python equivalent of the C# null-coalescing operator?
negative_passages.docid: 70566
negative_passages.text: How do I check if an object has a key in JavaScript?
negative_passages.docid: 41898
negative_passages.text: Nullable integer in .NET
negative_passages.docid: 114816
negative_passages.text: Is null reference possible?
negative_passages.docid: 156262
negative_passages.text: One step check for null value & emptiness of a string
negative_passages.docid: 126231
negative_passages.text: How can I manage the onslaught of null checks?
negative_passages.docid: 132398
negative_passages.text: What is null in Java?
negative_passages.docid: 13109
negative_passages.text: Null or default comparison of generic argument in C#
negative_passages.docid: 23135
negative_passages.text: How can I serialize an object to JSON without properties that are null?