Discipline Discipline is implicit obedience to the commands of a superior authority, and acceptance of punishment with a smile for any breach thereof. If there is no discipline in life, there is anarchy.
Introduction Today I thought I'd talk about a neat design pattern that doesn't seem to get much love: In its fullest form it's also sometimes called the Prototype Pattern. People use this pattern all over the place, and I'll give you a nice set of real-life examples in a little bit.
It's a design pattern that's useful in every programming language, and as we'll see shortly, it's also pretty darn useful as a general-purpose persistence strategy.
But even though this pattern is near-universal, people don't talk about it very often. I think this is because while it's remarkably flexible and adaptable, the Properties Pattern has a reputation for not being "real" design or "real" modeling.
In fact it's often viewed as a something of a shameful cheat, particularly by overly-zealous proponents of object-oriented design in language domains or relational design in database domains.
I hope to offer a different and richer perspective here. With luck, this article might even help begin the process making the Properties Pattern somewhat fashionable again.
Three Great Schools of Software Modeling Before I tell you anything else about the Properties Pattern, let's review some of the most popular techniques we programmers have for modeling problems.
I should point out that none of these techniques is tied to "static typing" or "dynamic typing" per se. Each of these modeling techniques can be used with or without static checking.
The modeling problem is orthogonal to static typing, so regardless of your feelings about static checking, you should recognize the intrinsic value in each of these techniques. Class Modeling You know all about this one. Class-based OO design is the pound gorilla of domain modeling these days.
Its appeal is that it's a natural match for the way we already model things in everyday life. It can take a little practice at first, but for most people class modeling quickly becomes second nature.
Although the industry loves OO design, it's not especially well liked as an academic topic. This is because OO design has no real mathematical foundation to support it — at least, not until someone comes along and creates a formal model for side effects.
The concepts of OOP stem not from mathematics but from fuzzy intuition. This in some sense explains its popularity, and it also explains why OOP has so many subtly different flavors in practice: Industry folks can never quite agree on what OOP is, but we love it all the same.
Relational Modeling Relational database modeling is a bit harder and takes more practice, because its strength stems from its mathematical foundation. Relational modeling can be intuitive, depending on the problem domain, but most people would agree that it is not necessarily so: Object modeling and relational modeling produce very different designs, each with its strengths and weaknesses, and one of the trickiest problems we face in our industry has always been the object-relational mapping ORM problem.
It's a big deal.
Some people may have let you to believe that it's simple, or that it's automatically handled by frameworks such as Rails or Hibernate. Those who know better know just how hard ORM is in real-world production schemas and systems. Usually XML is used to model data, but it can also be used to model code.
In many domains, programmers will decide on an XML representation before they've thought much about the class model, because for those domains XML actually offers the most convenient way of thinking about the problem.
I mention this not to start a fight, but only to illustrate that XML is a third modeling technique in its own right. It has both natural resonances and surfaces of friction with both relational design and OO design, as one might expect. Other schools I'm not claiming that these three modeling schools are the only schools out there — far from it!Object-oriented programming is a programming paradigm that uses abstraction (in the form of classes and objects) to create models based on the real world environment.
An object-oriented application uses a collection of objects.
Essay on “Man and Environment & Hazards of Pollution” Complete Essay for Class 10, Class 12 and Graduation and other classes. Related Documents: Essay about Programming Often used to teach object-oriented programming.
Python = Simple, yet powerful programming language used for graphics and small applications. They are created using something called Programming.
Programming, at its simplest form, is lines of code (or text) you type into a computer, to tell it. Watch video · Join Alexander Zanfir for an in-depth discussion in this video Introduction to object-oriented programming, part of Learning C#.
Join Alexander Zanfir for an in-depth discussion in this video Introduction to object-oriented programming, part of Learning C#. Skip navigation. Toggle Navigation. The Object-Oriented Programming mentions to the programming methodology based on the objects, in its place of just procedures and functions.
These objects are planned into classes, which are allowing to the individual objects to be group together. Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which may contain data, in the form of fields, often known as attributes; and code, in the form of procedures, often known as methods.