[Javascript] Advanced Reduce: Composing Functions with Reduce

Learn how to use array reduction to create functional pipelines by composing arrays of functions.

const increase = (input) => {

  return input + 1;

}

const decrease = (input) => {

  return input - 1;

}

const double = (input) => {

  return input * 2;

}

const halven = (input) => {

  return input / 2;

}

let pipelines = [

  increase,

  increase,

  decrease,

  double,

  halven,

  increase

];

let init_value = 1;

let res = pipelines.reduce( (acc, fn) => {

  return fn(acc);

}, init_value );

console.log(res);

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[Javascript] Advanced Reduce: Composing Functions with Reduce

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