import { findSingle } from "https://deno.land/x/fathym_common@v0.0.184/deps.ts";
Returns an element if and only if that element is the only one matching the
given condition. Returns undefined otherwise.
Examples
Example 1
Example 1
import { findSingle } from "https://deno.land/std@0.224.0/collections/find_single.ts";
import { assertEquals } from "https://deno.land/std@0.224.0/assert/assert_equals.ts";
const bookings = [
{ month: "January", active: false },
{ month: "March", active: false },
{ month: "June", active: true },
];
const activeBooking = findSingle(bookings, (it) => it.active);
const inactiveBooking = findSingle(bookings, (it) => !it.active);
assertEquals(activeBooking, { month: "June", active: true });
assertEquals(inactiveBooking, undefined); // there are two applicable items