[antlr-interest] bnf grammar

heartstalks heartstalks at yahoo.com
Sun Nov 23 14:07:26 PST 2003


hello 

any one can help me to understand bnf grammar?

what is the meaning of 

f::= f|-f|f=>f

m[f1=>f2]=m[f1] v M[f2]


 

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