function forEach(callback) {
        Object.keys(items).forEach(forHash);

        function forHash(hash) {
            items[hash].forEach(callback);
        }
    }
/**
     * Call the given callback on each element. The callback is called
     * with a single argument (the element). There is no guarantee
     * about the order of callbacks.
     */
Call the given callback on each element. The callback is called
with a single argument (the element). There is no guarantee
about the order of callbacks.
Call the given callback on each element . The callback is called with a single argument ( the element ) . There is no guarantee about the order of callbacks .
function forEach(callback) {
        Object.keys(items).forEach(forHash);
        function forHash(hash) {
            items[hash].forEach(callback);
        }
    }
function forEach ( callback ) { Object . keys ( items ) . forEach ( forHash ) ; function forHash ( hash ) { items [ hash ] . forEach ( callback ) ; } }
Call the given callback on each element.
Call the given callback on each element .