public class Employee { public Employee() { this.Insurance = new Insurance(); } // Perhaps another constructor for the name? public Employee(string name) : this() { this.Name = name; } public string Name { get; set; } public Insurance Insurance { get…
In this lesson, we’ll look at the propPath utility function. We’ll ask for a property multiple levels deep in an object and get back a Maybe. We’ll get a Just when the property exists at our path and a Nothing if any part of the path is undefined. co…
Sometimes you need to filter an array of objects or perform other conditional logic based on a combination of factors. Ramda's where function gives you a concise way to declaratively map individual predicates to object properties, that when combined,…
javascript nested object merge deep copy Object reference type function namespace(oNamespace, sPackage) { // deep copy let res = oNamespace; const arr = sPackage.split("."); // ["a", "b", "c", "d"] const…
A common problem when dealing with some kinds of data is that not every object has the same nested structure. lukeskywalker.parents.father.isjedi works, but anakinskywalker.parents.father.isjedi throws an exception, because anakin_skywalker.parents.f…
In this lesson, we’ll use a Maybe to safely operate on properties of an object that could be undefined. We’ll use our initial code as the basis for a prop utility function that can be reused with different objects and various property names. Instead…
In this lesson we'll learn the basics of using lenses in Ramda and see how they enable you to focus changes on specific properties of an object while keeping your data immutable. what 'R.lens' do is able to get or set prop value but keep the object i…
