//curry
"use strict";
///home/hav/hv/vhost10666/JS/blank/htdocs/c/h/js/std/class2.js
var myApp = myApp || { }; // top-level namespace

$(function() {	//start when DOM ready
    let msg = "";
    msg += "curry example <br/>";
    msg += "<a href=\"https://blog.logrocket.com/understanding-javascript-currying/\" target=\"_blank\"> about curry   </a><br/>";

    let k1 = function(a, b, c){
        return ((a + b + c) / 3);
        }

    let k2 = (a, b, c) => {
        return ((a + b + c) / 3);
        }

// function kc takes one argument a 
// and returns a function that takes another argument b
// and...
    let kc = (a) => {
            return (b)=>{
                return (c)=>{
                    return ((a + b + c) / 3)
                }
            }
        }
    msg += "<pre>";
    msg += "  no curry_1: k1(4, 5, 6) = " + k1(4, 5, 6) + "<br/>";
    msg += "  no curry_2: k2(4, 5, 6) = " + k2(4, 5, 6) + "<br/>";
    msg += "  with curry: kc(4)(5)(6) = " + kc(4)(5)(6) + "<br/>";
    msg += "</pre>";
    document.getElementById('place').innerHTML =  msg;
})