Extended Backus-Naur Form

(language)Any variation on the basic Backus-Naur Form (BNF)meta-syntax notation with (some of) the following additionalconstructs: square brackets "[..]" surrounding optionalitems, suffix "*" for Kleene closure (a sequence of zero ormore of an item), suffix "+" for one or more of an item,curly brackets enclosing a list of alternatives, andsuper/subscripts indicating between n and m occurrences.

All these constructs can be expressed in plain BNF using extraproductions and have been added for readability andsuccinctness.

单词	extended backus-naur form
释义	Extended Backus-Naur Form Extended Backus-Naur Form (language)Any variation on the basic Backus-Naur Form (BNF)meta-syntax notation with (some of) the following additionalconstructs: square brackets "[..]" surrounding optionalitems, suffix "*" for Kleene closure (a sequence of zero ormore of an item), suffix "+" for one or more of an item,curly brackets enclosing a list of alternatives, andsuper/subscripts indicating between n and m occurrences. All these constructs can be expressed in plain BNF using extraproductions and have been added for readability andsuccinctness. AcronymsSeeEBNF
随便看	uswv usww usx usxports usy usyba usyd usye usyg usygc usyru usys usysa usysnv usyvl usz uszepp ut ut. ut 0 ut0 ut03 ut 1 ut1 ut 2