Object-oriented programming is not a single thing. It is a family of ideas that C#, Java, and Python realize in strikingly different ways. This book teaches the paradigm by showing every concept three times — once in each language — so you can move between them without losing your footing. It begins with encapsulation, inheritance, and polymorphism, then moves into abstract classes, interfaces, and the case for composition over inheritance. It covers design patterns, generics, exception hi...

You are the developer, analyst or founder who ended up in charge of the numbers, with no data team and no time for a year-long platform project. This guide shows how to build a small, boring and dependable setup: loads that are safe to run twice, a clear raw, staging and mart structure, schedules that recover from failure, and a short list of quality checks that catch problems before your colleagues do. It then turns clean tables into agreed metrics and reports people actually open, and fi...

You can follow a recipe to the letter. Then one ingredient is missing, the timing is off, or the dish tastes like nothing, and you are stuck with a phone in one hand and a spoon in the other, wondering how other people just know what to do. Cook Without Recipes is the step after the basics. It does not hand you more recipes. It teaches the thinking underneath them: how to taste a pot and name what it needs, how to season without a measuring spoon, how to swap one ingredient for another by ...

Your sleep study is done, your machine runs every night, and the app cheerfully tells you your AHI is under five. So why do you still wake up feeling like you were hit by a truck, reaching for coffee by nine, nodding off at your desk? If a 'good number' and a bad morning are your reality, this book is the missing manual. Still Tired on CPAP is written for the person who is past the first few months and stuck. It is not an onboarding guide to your first weeks with the machine; it starts whe...

You have heard that people build income from dividends, but every explanation seems to start with jargon and end with a hot tip. What does a payout really mean, why do the biggest yields so often disappoint, and how much would it take to get anywhere near a monthly check? Dividend Investing for Beginners walks you through it calmly and honestly. Unlike a first-investment primer, a crash-psychology book or a retirement-withdrawal guide, it stays on one question: how do you build a growing s...

Every library holds a quiet record of what its community reads, searches and asks. Keeping that record safe is now part of everyday service, yet most staff were never shown how. This practical guide walks library managers, branch and school librarians, systems and e-resources staff through the work step by step. You will map the personal data you hold, set sensible retention periods for circulation, computer and camera records, question vendors about their terms, and handle requests from p...

Fund pages, account statements and financial news are full of words that sound simple and are not: expense ratio, duration, yield, drawdown, correlation, rebalancing. This book explains them in everyday language, one idea at a time, with small worked examples where the arithmetic is shown so you can check it yourself. You will see how an index is built and what an index fund really holds, how bond prices respond to interest rates, how fees compound against you over twenty years, what the m...

A home server runs every hour of the year, so what it draws at idle matters far more than its top speed. This book shows you how to decide what your server must do, compare mini PCs, single-board computers, used office machines and storage boxes, and pick processor, drives and power supply with idle watts in mind. You will measure real consumption at the wall, build a baseline, and tune firmware and Linux settings one safe step at a time. Chapters on cooling, noise, drive spin-down, sleep ...

The pipeline is green, every job reports success, and the number on the dashboard is still wrong. If you build or maintain tables that other people trust, this book shows you how to catch the problems that do not announce themselves. You will profile a table before writing rules, find exact and near duplicates, tell harmless gaps from harmful ones, write layered rules for invalid records, spot schema changes before they spread, and expose silent errors with volume, freshness and reconcilia...

Your jaw is tight before the alarm even goes off, and by afternoon the ache has moved to your temple, ear, or neck, after a night guard and a bite adjustment that didn't fix it. This book argues chronic jaw pain is usually a muscle-and-nerve problem fed by stress, not a damaged hinge, and builds a plan around that: catching daytime clenching early, using a night guard for what it can realistically do, taking load off a neck quietly sharing the work, and knowing which professional treatment...

Standing in the aisle with a box in each hand, the numbers on the back rarely line up the way you need them to. This guide turns the label into something you can read in about a minute. You will learn what a serving really is and how to scale it to your own bowl, how salt and sodium relate, where added sugars hide behind unfamiliar names, how to judge fibre by its source, and how to read an ingredient list as a ranking. It also shows how to test the claims on the front of the pack and the ...

Logging, security, transactions, caching, retries — these concerns cut across every service method in every enterprise application, and implementing them manually produces the same boilerplate in hundreds of places. Aspect-Oriented Programming removes that duplication. This book teaches AOP on both sides of the enterprise divide. It covers AspectJ, the reference implementation whose vocabulary shaped every AOP framework after it. It covers Spring AOP, the proxy-based framework used by most...