Null often pops up in legal and scientific contexts; it was originally used in Scottish law and still carries the meaning "having no legal or binding force," especially in the phrase "null and void."

Null character, the zero-valued ASCII character, also designated by NUL, often used as a terminator, separator or filler. This symbol has no visual representation.

Jun 12, 2018 · null is a fundamental concept in many programming languages. It is ubiquitous in all kinds of source code written in these languages. So it is essential to fully grasp the idea of null . We …

NULL definition: without value, effect, consequence, or significance. See examples of null used in a sentence.

Feb 16, 2019 · The key to understanding what null! means is understanding the ! operator. You may have used it before as the "not" operator. However, since C# 8.0 and its new "nullable-reference …

Oct 28, 2025 · JavaScript is unique to have two nullish values: null and undefined. Semantically, their difference is very minor: undefined represents the absence of a value, while null represents the …

Sep 7, 2025 · The concept of null and its significance in computing with our comprehensive definition, examples, and explanations. Learn how null differs from zero and empty.

Jan 23, 2025 · null is an intentionally empty value, often used to indicate that something has no value at the moment. undefined means that a variable has been declared but hasn’t been assigned a value yet.

SQL IFNULL (), ISNULL (), COALESCE (), and NVL () Functions Look at the following "Products" table: ... Suppose that the "UnitsOnOrder" column is optional, and may contain NULL values. Look at the …

Aug 14, 2024 · Ever since its invention, null has remained a fundamental concept in many imperative programming languages like Java, C#, and JavaScript despite its drawbacks. The null reference …