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Re^3: Parse::RecDescent grammar definition

by jethro (Monsignor)
on Mar 21, 2011 at 17:22 UTC ( #894584=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Parse::RecDescent grammar definition
in thread Parse::RecDescent grammar definition

You are right, %item has either the Pre or Post matching part. But only in one case does it print anything!

Entry : Pre | Post { use Data::Dumper; print Dumper \%item;} # is equivalent to Entry : Pre Entry : Post { use Data::Dumper; print Dumper \%item; } # is equivalent to Entry : Post { use Data::Dumper; print Dumper \%item; } Entry : Pre # is NOT equivalent to Entry : Pre { use Data::Dumper; print Dumper \%item; } Entry : Post { use Data::Dumper; print Dumper \%item; }

And the last example is what you want


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