standing_relations/convenience/
concat.rs

1use crate::{Op, Relation};
2
3impl<C: Op> Relation<C> {
4    pub fn minus(self, other: Relation<impl Op<D = C::D>>) -> Relation<impl Op<D = C::D>> {
5        self.concat(other.negate().hidden()).type_named("minus")
6    }
7}