Write Higher Order Arrow Functions helps

Tell us what’s happening:
I have found the integer numbers .filter((x => x > 0 && x % 2 ===0)) but I need help to square them.

Your code so far


const realNumberArray = [4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2];
const squareList = (arr) => {
  "use strict";
  // change code below this line
  const squaredIntegers = arr.filter(....);
  // change code above this line
  return squaredIntegers;
};
// test your code
const squaredIntegers = squareList(realNumberArray);
console.log(squaredIntegers);

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Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/es6/write-higher-order-arrow-functions

arr.filter returns an array: this allow you to ‘concatenate’ other HighOrderFunctions.
Something like: arr.filter( x => stuffOnX).map(y => stuffOnY) will operate stuffOnY for each element of the array returned from the first filter function^^

Good luck! :slight_smile:

1 Like

Thank you :rose: so much I have done it

1 Like