dual
import { dual } from "https://raw.githubusercontent.com/baetheus/fun/main/combinable.ts";Get the "Dual" of an existing Combinable. This effectively reverses the order of the input combinable's application. For example, the dual of the "first" combinable is the "last" combinable. The dual of (boolean, ||) is itself.
@example
import * as SG from "./combinable.ts";
import { pipe } from "./fn.ts";
type Person = { name: string, age: number };
const last = SG.last<Person>();
const dual = SG.dual(last);
const octavia: Person = { name: "Octavia", age: 42 };
const kimbra: Person = { name: "Kimbra", age: 32 };
const brandon: Person = { name: "Brandon", age: 37 };
const dualPerson = pipe(
octavia,
dual.combine(kimbra),
dual.combine(brandon),
); // dualPerson === octavia