each-once v0.0.6

each-once

For each item in collection once.

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feature

• Easy to use.
• Data structure is basic.
• Efficient.

install

npm install each-once

usage

import { combine, map, filter, take, reduce } from "each-once";

const tf = combine(
  map((x: number) => x * 2),
  filter((x: number) => x % 4 === 0),
  take<number>(10)
);

const transduce = reduce((r, x) => r + x, 0, tf);

const s = function* () {
  let x = 0;
  while (true) {
    yield x++;
  }
};

const result = transduce(s()); // transduce([0, 1, 2...])

console.log(result); // 180

benchmark

Benchmark which map n times and reduce once. from benchmark.ts

array

each-once

each-once is more efficient!

document