Software Engineering

Understanding TF IDF (term frequency - inverse document frequency)

tf-idf stands for Term Frequency - Inverse Document Frequency. It is a 2 dimensional data matrix where each term denotes the relative frequency of a particular word in a particular document as compared to other documents. This is a widely used metric in Text Mining and Information retrieval

Functors in C++

Function objects are another example of the power of generic programming and the concept of pure abstraction. We could say that anything that behaves like a function is a function. So, if we define an object that behaves as a function, it can be used as a function as well.

Software Engineering

Decltype keyword in C++

Decltype stands for declared type of an entity or the type of an expression. It lets you extract the type from the variable so decltype is sort of an operator that evaluates the type of passed expression.

Software Engineering

Auto keyword in C++

The auto keyword specifies the type of the variable that is being declared will be automatically identified by the compiler. It is used for type inference, save time while creating iterators and create method with return type as auto

Software Engineering

Working with audio in HTML5

The HTML element is used to embed sound or music element in our HTML page. It may contain one or more audio sources, represented using the src attribute or the element: the browser will choose the most suitable one. We will discuss about in in later part of the article

Software Engineering

Working with video in HTML5

The HTML Video tag embeds a media player which supports video playback into the document. We can use for audio content as well, but the tag may provide a more appropriate user experience.

Software Engineering

Viewing and Changing IndexedDB contents of any website using Chrome DevTools

We will try to check the IndexedDB contents of a website using Chrome DevTools. (Using Firefox Developer Tools is also very similar.) We will add a few records and then try to view and update it using the DevTools.

Software Engineering

Working with IndexedDB in HTML5

IndexedDB is a JavaScript-based object-oriented database which lets you store just about anything in the user's browser. It uses indexes to search data efficiently. DOM storage is good to use to store small amount of data like login session in a website but not for storing large amounts of data

Software Engineering

How to handle Exceptions in Python?

We should handle the exception and prevent the program from crashing and this is supported in Python. We will learn about try except block, the optional else block and Finally block which makes sure a code section runs irrespective of exceptions.

Software Engineering

For Loop in Python

We are going to discuss about the for loop in Python and answer the following questions: Can a For loop print the elements of a List and Tuple? Can a For Loop be used for a String? Can for loops be nested? How to use Range function in For loop? How are Continue and Break Statements used in For Loop?

Software Engineering

Yield in Python

The yield statement suspends function’s execution and sends a value back to caller, but retains enough state to enable function to resume where it is left off. What are generators? What is yield? Difference between return and yield Where is yield used?

Software Engineering

Switch Case in Java

A switch statement in Java allows an expression to be tested for equality against a list of values. Java SE 7 and later, the support for a String object is also available with switch case. We explore the basics of it like break, default statements and syntax rules

Software Engineering

Explaining Classes in Python by designing a Dog

Classes are the building blocks of object oriented programming and since python is an object oriented language it supports classes implicitly. Classes give us a way to model real world objects. They combine data and functions into one entity.

Software Engineering

Working with Strings in Java

In Java, strings are treated as objects of class String. Strings are immutable objects which means they are constant and cannot be changed once it has been created. How to create a string in Java? Does String class has a Constructor? How to compare Strings in Java? How to search a string in Java?

Software Engineering

Introduction to Canvas

The canvas element is part of HTML5 specification and allows for rendering of 2D shapes and bitmap images. It is a low level, procedural model that updates a bitmap. Canvas also helps in making 2D games, animations, scenes or any graphics in general using JavaScript.

Software Engineering

Representing Strings in C

Compared to other languages, C is a low-level language. It does not have any specific data-type specific for a String. Since there is no built-in data-type in C language for String, it is handled using an array of characters. A String in C can be defined as an array of characters.

Software Engineering

Concurrency in C++

Concurrency is having multiple threads of execution for a given process. As of today, C++ does not directly support it. However, several libraries exist that will tie a given function to a new thread of execution. We look into threads, race condition, mutex, atomicity, asynchronous tasks

Software Engineering

if else in Kotlin

if else is a conditional control flow statement which is commonly used and is supported by all major OOP languages. We explore if else in Kotlin in this article

Python

Implementing User Authentication in Django

Django comes with a built-in user authentication system, which handles objects like users, groups, user-permissions and some cookie-based user sessions. Django’s User authentication not only authenticates (verifying the user identity) the user but also authorizes him.

kotlin

When in Kotlin

When is one of the control flow of Kotlin. If you are coming from java, When is a bit similar to Switch. Even if you don't know java, think When as powerful nested if else. If you don't know any programming language, then think When as a plain enlglish term WHEN.

C++

Multipath Inheritance in C++

Multipath Inheritance in C++ is derivation of a class from other derived classes, which are derived from the same base class.This type of inheritance involves other inheritance like multiple, multilevel, hierarchical etc.

C++

Hybrid Inheritance in C++

In C++, Hybrid inheritance is done when we have to mix different types of inheritance within a single program, for example, mixing single inheritance with multiple inheritance or multiple inheritance within a single program.

C++

Single inheritance in C++

In C++, Single Level Inheritance or Single Inheritance is the mechanism of deriving a class from only one single base class.

C++

Struct in C++

struct or Structure is a user defined data type which allows you to combine data items of different kinds. Structures are used to group together different data elements (types of variables) under the same name. These data elements, known as members, can have different types and different lengths.

C++

Output in C++

Output Stream: The stream used for output is the output stream. If the direction of flow of btyes is from main memory to device( example :display screen ) then this process is called output. We explored cout, clog and cerr along with formatted output