New in version 2.0.
True when expr has at least one leaf with dotted writtern duration:
abjad> notes = notetools.make_notes([0], [(1, 16), (2, 16), (3, 16)])
abjad> leaftools.expr_has_leaf_with_dotted_written_duration(notes)
True
False otherwise:
abjad> notes = notetools.make_notes([0], [(1, 16), (2, 16), (4, 16)])
abjad> leaftools.expr_has_leaf_with_dotted_written_duration(notes)
False
Return boolean.