New in version 1.1.
True when elements in expr are all components in same score. Otherwise false:
abjad> score = Score([Staff("c'8 d'8 e'8")])
abjad> componenttools.all_are_components_in_same_score(score.leaves)
True
True when elements in expr are all klasses in same score. Otherwise false:
abjad> score = Score([Staff("c'8 d'8 e'8")])
abjad> componenttools.all_are_components_in_same_score(score.leaves, klasses = (Note, ))
True
Return boolean.