Breakout about higher order functions

higherFct.js

const ancestry = [
    {"name": "Emma de Milliano", "sex": "f",
     "born": 1876, "died": 1956,
     "father": "Petrus de Milliano",
     "mother": "Sophia van Damme"},
    {"name": "Carolus Haverbeke", "sex": "m",
     "born": 1832, "died": 1905,
     "father": "Carel Haverbeke",
     "mother": "Maria van Brussel"},
     {"name": "Marcus Pillus", "sex": "m",
     "born": 1901, "died": 1905,
     "father": "Carel Haverbeke",
     "mother": "Maria van Brussel"}
  ]

function filter(array, test ) {

    

    const filteredArray = []

    for (let element of array) {

        // element contains each object one at a time
        
        if (test(element)) {
        // if (element.born > 1900 && element.born < 1925) {
            filteredArray.push(element);
        }
    }
    return filteredArray;
}

function map(array, transform) {

    // const transform = function(inputObj) { return inputObj.name};

    const mappedArray = [];

    for (let element of array) {
        mappedArray.push( transform(element) );
    }

    return mappedArray;
}

const over50 = filter(ancestry, function(inputObj){

    return inputObj.died - inputObj.born > 50;

}) 


console.log(map(over50, function(inputObj) { return inputObj.name} ));

// ouput the names of the persons over 90
// ["Clara Aernoudts", "Emile Haverbeke",
//    "Maria Haverbeke"]