tore a new XMLHttpRequest object in the xhr variable, then assign requestHandler function as the "error" event listener. function requestHandler() { console.log("handling response: " + this.responseText); }

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def upgrade_stations(threshold: int, num_bikes: int,                     stations: List["Station"]) -> int:    """Modify each station in stations that has a capacity that is less than    threshold by adding num_bikes to the capacity and bikes available counts.    Modify each station at most once.     Return the total number of bikes that were added to the bike share network.     Precondition: num_bikes >= 0

can someone help me or teach whats wrong with my code please badly needed this night

A bucket list is a collection of goals, dreams, and aspirations that you would like to accomplish within your lifetime. The purpose of this assignment is to develop a program that allows the user to manage their personal bucket list and save it to an XML file bucketlist.xml. For full credit, run the program and create a file with at least three entry elements. Submit a document containing a copy of the source file, a screenshot of the program in action, and the contents of the XML file. File Structure Below is the basic structure (i.e. schema) for the XML file. You may add additional elements. <bucketList> <entry> <rank></rank> <description></description> <status></status> </entry> </bucketList> Note: Before running the program, manually create an XML input file with at least one entry element that contains values in each child element. GUI Requirements At a minimum, your GUI must meet the below requirements. No minimize…

You have to use comment function to describe what each line does    import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.List;   public class PreferenceData {   private final List<Student> students; private final List<Project> projects; private int[][] preferences;   private static enum ReadState { STUDENT_MODE, PROJECT_MODE, PREFERENCE_MODE, UNKNOWN; };   public PreferenceData() { super(); this.students = new ArrayList<Student>(); this.projects = new ArrayList<Project>(); }   public void addStudent(Student s) { this.students.add(s); }   public void addStudent(String s) { this.addStudent(Student.createStudent(s)); }   public void addProject(Project p) { this.projects.add(p); }   public void addProject(String p) { this.addProject(Project.createProject(p)); }   public void createPreferenceMatrix() { this.preferences = new…

Given the following program segment. Assume the node is in the usual info-link form with the info of the type int. (list and ptr are reference variable of the LinkedListNode type. What is the output of this program? list = new LinkedListNode (); list.info = 20; ptr = new LinkedListNode (); ptr.info = 28; ptr.link= null; list.link ptr; ptr = list; list = new LinkedListNode (); list.info = 55; list.link = ptr; ptr = new LinkedListNode (); ptr.info = 30; ptr.link= list; list = ptr; ptr = new LinkedListNode (); ptr.info = 42; ptr.link= list.link; list.link= ptr; ptr = list; while (ptr!= null) { } System.out.println (ptr.info); ptr = ptr.link;

Create the .cpp file of this .h file in C++   #include <string>using namespace std;int GetNextID();class Passenger {public: Passenger(); // New passenger, assigning ID using GetNextIDPassenger(int, string, string); // ID, origin, destinationvoid Initialize(int, string, string); // ID, origin, destinationint GetID() {return ID;}string GetOrigin(){ return origin;}string GetDest() {return destination;}private:int ID; // A unique ID number for the passengerstring origin; //Airport identifierstring destination; // Airport identifierint GetNextID(); // Assigns ID's sequentially, starting with 1001};