[OOAD] Object Oriented Analaysis & Design - Chapter 1 - Well Designed Apps Rock

 




































Encapsulation doesn't only means to make properties  / member variables as private but it also has some more significance

Encapsulation allows you to group your application into logical parts.

 
 




In order to make the application maintainable we need to make sure that each object is just doing its own job and this is achieved by DELEGATION



Comments

Post a Comment

Popular posts from this blog

[Mac OS X] Creating a .bash_profile on your Mac Terminal

Image
Look & Feel of the Terminal window can be modified in two ways: First by opening the Preferences option available under Terminal Menu --> Preferences and make modifications to the layout settings of my choice. Other option is using a .bash_profile. When you want to run functions from your command line, this is a must-have. Following steps will create a .bash_profile under the home directory. Start up Terminal Type "cd ~/" to go to your home folder Type "touch .bash_profile" to create your new file. Edit .bash_profile with your favorite editor (or you can just type "open -e .bash_profile" to open it in TextEdit. Type d following in my .bash_profile file: # Make ls use colors export CLICOLOR=1 alias ls='ls -Fa' # define colors C_DEFAULT="\[\033[m\]" C_WHITE="\[\033[1m\]" C_BLACK="\[\033[30m\]" C_RED="\[\033[31m\]" C_GREEN="\[\033[32m\]" C_YELLOW="\[\033[33m\]" C_BLUE=...
Read more

How to set up TypeScript with Node.js and Express

Image
Ease of development is great when you’re building a server written in JavaScript and using Node.js and Express. But what happens when your application server scales, or you’re working on a team of developers all across the world? In these instances, TypeScript can help. In this article, we’ll cover a beginner-friendly way to set up TypeScript in an Express app, understanding the basic constraints that come with it. To take full advantage of this tutorial, be sure you have the following: Node.js version ≥ v12.x installed in your local development environment Access to a package manager like npm or Yarn Basic knowledge of Node.js and Express Create a  package . json  file Start by creating a new directory wherever you keep your side projects in your local development environment. Inside that directory, use npm’s initializer command to create a  package . json  file: mkdir node - express - typescript cd node - express - typescript / npm init -- yes When you initialize ...
Read more

How to Create a React App with Storybook

Image
  UI designers and front-end developers are tasked with creating clean and consistent user interfaces. At the same time, testing is a cornerstone of software development. Each part of a software project is tested individually and isolated from the other elements in unit tests. This practice has been challenging to achieve in the context of user interfaces. Now  Storybook  provides an open-source framework that lets you test UI components in isolation from the rest of the website. Storybook presents you with a browser of all the components in your web application. You can test each component independently and in different configurations. The tool runs as a separate application outside your main application, which means that you can test your components without worrying about application-specific dependencies or requirements. In this tutorial, I will show you how to use Storybook to create a simple  React  application. The application will be a unit conversion app...
Read more