fn debug_with_context<V: Debug + Eq>(
new: &IndexSlice<ValueIndex, V>,
old: Option<&IndexSlice<ValueIndex, V>>,
map: &Map,
f: &mut Formatter<'_>,
) -> Result
fn debug_with_context<V: Debug + Eq>(
new: &IndexSlice<ValueIndex, V>,
old: Option<&IndexSlice<ValueIndex, V>>,
map: &Map,
f: &mut Formatter<'_>,
) -> Result