| 1 | //! Map functionality. |
|---|---|
| 2 | |
| 3 | use super::{Relation, Variable}; |
| 4 | |
| 5 | pub(crate) fn map_into<T1: Ord, T2: Ord>( |
| 6 | input: &Variable<T1>, |
| 7 | output: &Variable<T2>, |
| 8 | logic: impl FnMut(&T1) -> T2, |
| 9 | ) { |
| 10 | let results: Vec<T2> = input.recent.borrow().iter().map(logic).collect(); |
| 11 | |
| 12 | output.insert(Relation::from_vec(elements:results)); |
| 13 | } |
| 14 |