pub fn parts_same(
a: &[Pitch],
b: &[Pitch],
parts: Option<&[usize]>,
) -> Result<bool>Expand description
Whether each part named in parts sings the same pitch in a and b;
with no parts named, they always do. Parts are numbered from one, the
highest.
ยงErrors
Two possibilities with different numbers of parts, or a part number they have no part for.