isaacssemugenyi

"""
**************************************
 ADDRESS BOOK (REFACTORED VERSION)
 Behavior preserved, design improved
**************************************
"""

from datetime import datetime

isaacssemugenyi

// Existing global state (KEEP)
let contacts = [];
let lastId = 0;

/**
 * NEW: AddressBook class
 * We introduce it but DO NOT break existing code
 */
class AddressBook {
    constructor(store, clock = () => new Date().toISOString()) {

isaacssemugenyi

/***************************************
 * Characterization Tests for AddressBook
 ***************************************/

describe('Legacy Address Book – Characterization Tests', () => {

    beforeEach(() => {
        // Reset module state before every test
        jest.resetModules();
    });

isaacssemugenyi

√ adds a contact successfully with valid data
    √ does not add contact when name is missing
    √ does not add contact with duplicate phone number
    √ finds a contact by phone number
    √ returns null when searching for non-existent phone
    √ updates an existing contact
    √ returns false when updating a non-existent contact
    √ deletes an existing contact
    √ returns false when deleting non-existent contact
    √ searches contacts by keyword across name, phone, and email

isaacssemugenyi

/**************************************
 * ADDRESS BOOK (LEGACY / MESSY VERSION)
 **************************************/

let contacts = [];
let lastId = 0;

function addContact(name, phone, email, address) {
    if (name == null || name === "") {
        console.log("Name is required");

isaacssemugenyi

/***********************
 * Simple Grading System
 ***********************/

let students = [];     
let totalProcessed = 0;


function doIt(
    name,                        

isaacssemugenyi

/************************
 * Clean Grading System
 * Refactored for clarity,
 * structure, and safety
 ************************/

/* ===== Constants (No Magic Numbers) ===== */
const SUBJECT_COUNT = 4;
const ATTENDANCE_BONUS_THRESHOLD = 90;
const ATTENDANCE_BONUS_POINTS = 5;

isaacssemugenyi

/***********************
 * Simple Grading System
 ***********************/

let students = [];     
let totalProcessed = 0;


function doIt(
    name,                        

isaacssemugenyi

// config with dotenv
impl Config {
    pub fn from_env() -> Result<Self, ConfigError> {
        let s = config::Config::builder()
        .add_source(config::Environment::default())
        .build()?;

    s.try_deserialize()
    }
}

isaacssemugenyi

package builder;

import java.util.ArrayList;
import java.util.List;

public class Car {
    private String make;
    private String name;
    private String color;
    private int model;