Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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In Kotlin, Use this Employee class:
data class Employee(val name: String, val wage: Double, val hours: Double)
and this list of Employees:
val l: List = listOf(Employee("Bob", 34.33, 42.0), Employee ("Cathy", 27.33, 15.25), Employee("Carlos", 46.99, 38.75), Employee("Tomas", 49.66,28.45), Employee("Xavier", 34.56, 11.5))
Write one line of code that uses filter(), sortedBy() and map() to show the names and hours worked of those Employees who earn more than $30 per hour, sorted by employee name.
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- Write a class named Library. A library has the following attributes:• name: the name of this library.• employees: a list of LibraryEmployees that work at the library.• books: a dictionary that contains Books as keys. The value paired with each key is either anempty string, or a string representing the name of a person who has checked out the Book.The Library class should have an initializer that MAY accept employees and books as arguments,but doesn’t have to do so. If provided, these values should be assigned to the object’srespective attributes. If not provided, employees and books should begin as an empty list anddictionary, respectively. The value for the name attribute is always provided.The class should also have the following methods:• hire_employee(): takes in a new LibraryEmployee, and adds it to this library’s list ofemployees.• add_book(): takes in a new Book, and adds it to this library’s books (unless the libraryalready has this book). If the library already has the book,…arrow_forwardUsing C++ Define the class called Student. The Student class has the following: Part 1) Private data members: name(string), age(int), units(int). The units represent the number of quarter units student is enrolled in. Define a default constructor as well as a constructor with parameters for the class Student. The class must have get and set functions for all private data members. The set function for the data member units must throw “out_of_range” exception if the number of units is not between 1 and 15. Include a function called tuition (double feePerUnit) that computes and returns the cost of registering for the number of units (in the private data member). The function receives the cost per unit as a parameter. Overload the operator (<<) to display student name and age. Test the class Student by writing a main program in which a Student object is created and displayed. Call the function tution(), you may pass any value as feePerUnit parameter to this function and display the…arrow_forwardWrite a class named Library. A library has the following attributes:• name: the name of this library.• employees: a list of LibraryEmployees that work at the library.• books: a dictionary that contains Books as keys. The value paired with each key is either anempty string, or a string representing the name of a person who has checked out the Book.The Library class should have an initializer that MAY accept employees and books as arguments,but doesn’t have to do so. If provided, these values should be assigned to the object’srespective attributes. If not provided, employees and books should begin as an empty list anddictionary, respectively. The value for the name attribute is always provided.The class should also have the following methods:• hire_employee(): takes in a new LibraryEmployee, and adds it to this library’s list ofemployees.• add_book(): takes in a new Book, and adds it to this library’s books (unless the libraryalready has this book). If the library already has the book,…arrow_forward
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