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Module

x/fun/set.ts>elem

A collection of algebraic data types, lenses, and schemables based on a light weight higher kinded type implementation. Written for deno.
baetheus/fun
Latest
function elem
import { elem } from "https://deno.land/x/fun@v2.0.0/set.ts";

Given an insuance of Comparable create a function that takes a value A and returns a predicate over ReadonlySet the returns true if there are any members of the set that are equal to the value.

Examples

Example 1

import * as S from "./set.ts";
import * as N from "./number.ts";
import { pipe } from "./fn.ts";

const elem = S.elem(N.ComparableNumber);

const set = S.set(1, 2, 3);

const result1 = pipe(set, elem(1)); // true
const result2 = pipe(set, elem(10)); // false

Returns

(value: A) => (ua: ReadonlySet<A>) => boolean