ndw’s avatarndw’s Twitter Archive—№ 33,840

      1. The invisible XML grammar for invisible XML is ambiguous. (This is a feature.) That means there’s more than one parse for the ixml grammar for ixml. How many parses are there? More than fit in an int. More than fit in a long!? 1/2
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      23,945,242,826,029,513,411,849,172,299,223,580,994,042,798,784,118,784
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  1. …in reply to @ndw
    It turns out, that wasn't a parse of the ixml grammar, that was the parse of a much smaller grammar. It also turns out that if you don't count every possible way to replace a nonterminal with an empty string, you get a much smaller number.
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