Mohanad Kaleia

Idea for a cause

OOP in Python

During my Master as a Computer Engineer, I worked with Python for data analysis, machine learning and deep learning projects. Python becomes more and more popular especially for writing AI and machine learning algorithms. But that is not the only thing that makes it great programming language, Python is just as C++ and Java supports Object Oriented Programming OOP. Which makes it suitable not just for research purposes but also for large scale applications.

In this article I will discuss OOP concepts in Python. As well as, we will highlight the differences in OOP between C++ and Python as a comparison between the two.

Python is designed from the beginning to support Object Oriented Programming concepts, providing the ability to build  large scale applications. If you don’t know or you kind of don’t remember the concepts of OOP we will review them here briefly in this article. OOP concepts are divided into 5 aspects as follow:
  • Class: represents a prototype for an object. This prototype describe object’s attributes and behavior
  • Object: an instance of its defined class (prototype). An object can hold values for attributes and execute functions defined by its prototype. 
  • Abstraction: with abstraction a class can hide some of its details and expose only specific information to the outside 
  • Inheritance: one of most important aspects in OOP is inheritance for code reusability. 
  • Polymorphisim: means the ability to have same function with different behavior.
We will go through these concepts one by one with an example for each of them. 

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Interpreted Languages VS Compiled Languages

Have you ever wondered what is the difference between interpreted languages and compiled languages. You may already used some interpreted (scripting) languages like Python and some other compiled languages like C++. In this post I will explain briefly what is the difference between scripting and compiled languages.

The main difference between scripting and compiled languages is the former are interpreted where they do not require compilation step while the other do. For example a scripting language (e.g., Python) you can write a code and execute it write away without the need to compile it first and then execute it. The interpreter is execute the code line by line, that’s why interpreted languages considered slower than compiled languages. While a compiler convert the source code into a middle phase named as Byte-code. The byte-code is an executable version of the code that can be executed by an interpreter.

Examples of interpreted languages are PHP, JavaScript and Pyhon. While,  C++ for example is considered as a compiled languages.

There are many advantages of interpreted programming languages, some of them:

  • Interpreted languages saves the compilation time, that’s why they are good for proof of concept application and for scientific applications
  • Interpreted languages are platform independent, unlike in the compiled languages where we have to produce a compiled version for every platform and operating system. This is very useful in web, for example JavaScript application can be run on different browser under different operating system. Just imagine if JavaScript is compiled language then for any webpage we have to test what is the platform and send an appropriate compiled version of the code to the client!
  • Smaller executable package size comparing with a compiled source code

Now we need to speak about the advantages of compiled languages:

  • Compiled languages are considered to be faster in the execution than interpreted languages. Because of that many large and critical projects are written in C++. (e.g., Linux operating system, many web browsers, IDEs, games, …, etc)
  • Secured. the compiled version of a code is not clear and cannot be read this makes application written in compiled languages (e.g., C++) are hard for reverse engineering.

There are many other advantages and disadvantages of both, but I want to limit this post to highlight only the major differences between interpreted and compiled programming languages.

 

References:

  1. https://www.geeksforgeeks.org/whats-the-difference-between-scripting-and-programming-languages/
  2. https://www.codeproject.com/Articles/696764/Differences-between-compiled-and-Interpreted-Langu

Different Countries, Different Personalities

 

Travelling abroad has so many advantages, one of them is seeing different cultures, different traditions and manners. Some manners considered to be good in countries are considered bad in some other countries. For example giving a tip in Japan for a server in a restaurant is kind of rude, while in US is totally the opposite. Another example, is clearing your plate. In China when dining, you should leave some part of the food on your plate. Speaking about food, in Europe if you did not finish your plate it is not popular to the left over in a box, people consider is impolite. Read More

Edge Computing – The wave of the future

Cloud computing was the wave of the future, or maybe it is the current wave of these days but not for the future anymore. Internet of things become to be on the top of the hype cycle of emerging technologies [1], and by 2020 around 50 billion devices will be connected to the internet sensing environment, as a result a really huge data (around 40ZB) will be generated, yes big data era is coming, but to handle all of coming data in the real time, process and generate knowledge out of it would really consider a crucial and yet hard to be handled on current data centers. So the question here how to get benefit of these data with losing its value?

cloud computing

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