All files / array/operator allPairs.ts

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import {collect} from './collect';
import {Tuple} from 'fnxt/fnxt-types';
 
export const allPairs = <E>(a: E[]) => <F>(b: F[]): Tuple<E, F>[] =>
  collect<E, Tuple<E, F>>((e: E) => b.map((f: F) => [e, f]))(a);