var itDepends = require("it-depends");
var firstName = itDepends.value('James');
var lastName = itDepends.value('Bond');
var fullName = itDepends.computed(function(){
return 'Hello, ' + firstName() + ' ' + lastName();
});
console.log(fullName()); // Hello, James Bond
firstName.write('Jack');
console.log(fullName()); // Hello, Jack Bond