Functional JS stuff

funcs.js

function get(prop) {
  return function(object) {
    return object[prop];
  };
};

function call(prop) {
  var args = Array.prototype.slice.call(arguments, 1);
  return function(object) {
    return object[prop].apply(object, args);
  };
};

usage.js

var jonas = { name: "Jonas" };

get("name")(jonas); // => "Jonas"

var jonas = {
  title: "Mr.",
  first: "Jonas",
  last: "Nicklas",
  fullName: function(withTitle) {
    if(withTitle) {
      return this.title + " " + this.first + " " + this.last;
    } else {
      return this.first + " " + this.last;
    }
  }
};

call("fullName")(jonas); // => "Jonas Nicklas"
call("fullName", true)(jonas); // => "Mr. Jonas Nicklas"

var people = [{ name: "Jonas" }, { name: "Kim" }];

people.map(function(person) { return person.name }); // => ["Jonas", "Kim"]
people.map(get("name")); // => ["Jonas", "Kim"]

var people = [jonas];

people.map(function(person) { return person.fullName(true) }); // => ["Mr Jonas Nicklas"]
people.map(call("fullName", true)); // => ["Mr Jonas Nicklas"]