
巴科斯范式 - 维基百科,自由的百科全书
巴科斯范式 (英語: Backus Normal Form,縮寫為 BNF),又称为 巴科斯-诺尔范式 (英語: Backus-Naur Form,縮寫同樣為 BNF,也譯为 巴科斯-瑙尔范式 、 巴克斯-诺尔范式),是一种用于表示 上下文无关文法 的语言,上下文无关文法描述了一类 形式语言。 它是由 约翰·巴科斯 (John Backus)和 彼得·诺尔 (Peter Naur)首先引入的用来描述计算机语言语法的符号集。 尽管巴科斯范式也能表示一部分 自然语言 的 语法,它还是更广泛地使用于 程序设计语言 、 指 …
巴科斯范式 - 百度百科
巴科斯范式 以美国人巴科斯(Backus)和丹麦人诺尔(Naur)的名字命名的一种形式化的语法表示方法,用来描述语法的一种形式体系,是一种典型的元语言。 又称巴科斯-诺尔形式(Backus-Naur form)。
扩展巴科斯范式(EBNF)简介 - CSDN博客
2017年11月21日 · 扩展巴科斯范式(Extended Backus-Naur Form,EBNF)是一种用于描述计算机编程语言和形式语言的上下文无关文法的元语法符号表示法。 它是基本 巴科斯范式 (BNF)的 扩展 ,最初由尼克劳斯·维尔特开发,并且由ISO-14977...
• It stands for Backus-Naur Form • It is a formal, mathematical way to specify context-free grammars • It is precise and unambiguous • Before BNF, people specified programming languages ambiguously, i.e., with English
Extended Backus–Naur Form - 红孩儿你好 - 博客园
2015年4月25日 · In computer science, Extended Backus–Naur Form (EBNF) is a family of metasyntax notations, any of which can be used to express a context-free grammar. EBNF is used to make a formal description of a formal language which can be a computer programming language. They are extensions of the basic Backus–Naur Form (BNF) metasyntax notation.
Backus-Naur Form, named after John W. Backus of the US and Peter Naur of Denmark, and usually written BNF, is the best-known example of a meta- language (q.v.), i.e. one that syntactically describes a programming language.
Backus–Naur Form (BNF) | EBSCO Research Starters
Backus–Naur Form (BNF) is a formal metalanguage used to define the syntax and grammar rules of programming languages. Developed in the late 1950s by American computer scientist John Backus, BNF serves as a structured notation that helps programmers ensure that their code adheres to a specific set of rules, much like a grammar book does for a ...
BNF Grammars – CS 61 2020 - Harvard University
The input language for sh61 command lines is described in terms of a BNF grammar, where BNF stands for Backus–Naur Form, or Backus Normal Form. BNF is a declarative notation for describing a language, which in this context just means a set …
GOLD Parsing System - Getting Started - Syntax & Backus-Naur …
The most common way of specifying the syntax of a language is use a notation known as Backus-Naur Form. Backus-Naur Form, BNF for short, is a notation used to describe grammars.
Backus-Naur Form (BNF) - A Level Computer Science Definition
2025年3月5日 · In A Level Computer Science, Backus-Naur Form (BNF) is a notation used to formally define the syntax of programming languages. It provides a concise way to represent grammar rules, using symbols like <expression> to define structures.
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