js functional programming

high-order-func.js

const once = (fn) => {
    return (...args) => {   
        fn && fn(...args);
        fn = null
    }
}

const thisManyTimes = (fn, limit) => {
    return (...args) => {
        if(limit > 0) {
            limit--;
            return fn(...args);
        }
    }
}

let log = once(console.log);

log('hello');
log('hello');
log('hello');


log = thisManyTimes(console.log, 2);

log('Test');
log('Test');
log('Test');
log('Test');
log('Test');
log('Test');
log('Test');
log('Test');




const factUp = (n, f = 1) => n <= f? f : f * factUp(n , f + 1);


console.log(factUp(4));