concept
Backus Naur Form
Backus Naur Form (BNF) is a formal notation used to describe the syntax of programming languages, data formats, and other formal languages. It provides a precise, context-free grammar specification through production rules that define how symbols can be combined. BNF is widely used in compiler design, language documentation, and parser generation.
Also known as: BNF, Backus-Naur Form, Backus Normal Form, Context-Free Grammar notation, Syntax notation
π§Why learn Backus Naur Form?
Developers should learn BNF when working on compiler or interpreter development, designing domain-specific languages (DSLs), or implementing parsers for data formats like JSON or XML. It is essential for understanding formal language theory, writing unambiguous syntax specifications, and using parser generators like Yacc or ANTLR that rely on BNF-like grammars.