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#nonterminal — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #nonterminal, aggregated by home.social.

  1. Ed Howland @edhowland ·

    With , we have no need of Epsilon here. The followed by the
    '*' operator simply means 0 or more of the preceding thing, here: The ElIfClause.
    And for completeness: (else Statements)? means 0 or 1 of the preceding group making them optional.
    Many times when trying to model your language syntax in , you are forced
    to break out a new NonTerminal, and to supply a alternate Epsilon.
    Often, you can avoid this with grouping and '*', '+' or '?'.
    Where is E used in

    #ebnf #nonterminal #bnf