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c# - What does null! statement mean? - Stack Overflow 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-types" feature, the operator got a second meaning
NULL Definition Meaning - Merriam-Webster 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 (SQL) - Wikipedia In the SQL database query language, null or NULL is a special marker used to indicate that a data value does not exist in the database