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 …

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

Sep 26, 2022 · In the context of programming languages, a variable that has no value assigned is considered null. It may have been created without a value with the intention of adding one to it later, …

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.

Feb 16, 2019 · ! is the null-forgiving operator, telling the compiler that, even though it normally wouldn't allow it, it should look the other way and allow it anyway, because we know better. null! itself has little …

Aug 14, 2024 · Yet, null fills an important role in denoting missing information that is hard to eliminate from language design. Understanding correct and thoughtful usage of null is key to avoiding its pitfalls.

Jun 5, 2024 · It's a primitive value that denotes the absence of a value or serves as a placeholder for an object that isn't present. `null` differs from `undefined`, which signifies a variable that has been …

The IS NULL operator in SQL is used to test for the presence of NULL values in a column. Unlike other values, NULL represents unknown or missing data, and can’t be checked using standard comparison …