The meaning of NULL is having no legal or binding force : invalid. How to use null in a sentence. Did you know?

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Oct 28, 2025 · The null keyword refers to the null primitive value, which represents the intentional absence of any object value.

NULL definition: 1. having no legal force: 2. with no value or effect: 3. (of a set or matrix) containing nothing…. Learn more.

Null (SQL) (or NULL), a special marker and keyword in SQL indicating that a data value does not exist, is not known, or is missing. Null character, the zero-valued ASCII character, also designated by NUL, …

May 11, 2026 · Tip This article is part of the Fundamentals section for developers who know at least one programming language and are learning C#. If you're new to programming, start with the Get started …

Apr 16, 2025 · What is NULL? You can think of NULL as an unknown or empty value. A variable is NULL until you assign a value or an object to it. This can be important because there are some …

Jul 11, 2025 · In computer science, a null value represents a reference that points, generally intentionally, to a nonexistent or invalid object or address. The meaning of a null reference varies …

Feb 16, 2019 · Basically, null! applies the ! operator to the value null. This overrides the nullability of the value null to non-nullable, telling the compiler that null is a "non-null" type.

Jun 12, 2018 · By Christian Neumanns What is the meaning of null? How is null implemented? When should you use null in your source code, and when should you not use it? Introduction null is a …