Chaining Array Methods & Arrow Functions

    // Arrays of Objects
    // Efficiently combining and chaining Array methods and Arrow functions
    // person.email.indexOf(“@replicant.io”) > -1 (filter test)
    // Find the names of all the people who have “replicant.io” emails
    
    let people = [
    {"id":123, "name":"Rick Deckard", "email":rick@bladerunner.org},
    {"id":456, "name":"Roy Batty", "email":roy@replicant.io},
    {"id":789, "name":"J.F. Sebastian", "email":j.f@tyler.com},
    {"id":258, "name":"Pris", "email":pris@replicant.io}
    };
    
    // Two step version
    let replicants = people.filter(function(person){
        return person.email.indexOf("@replicant.io") > -1;
    });
    let names = replicants.map(function(person) { 
        return person.name;
    });
    console.log("List of replicant names", names);
    
    // Chain the two steps
    let replicantNames = people.filter(function(person){ 
        return person.email.indexOf("@replicant.io") > -1;
    }).map(function(person){ 
        return person.name
    });

    console.log("List of replicant names", replicantNames);
    
    // arrow function version
    let rn = people.filter (person => person.email.indexOf("@replicant.io") > -1).map (person => person.name );

    console.log("List of replicant names", rn);