Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Python Sequences includes Strings, Lists, Tuples, etc. We can merge elements of a Python sequence using different ways. Merge Elements in a Python List Example The join() method is used to merge elements − # List myList = ['H', 'O', 'W', 'A', 'R', 'E', 'Y', 'O', 'U'] # Display the List print ("List = " + str(myList)) # Merge items using join() myList[0 : 3] = [''.join(myList[0 : 3])] # Displaying the Result print ("Result = " + str(myList)) Output List = ['H', 'O', 'W', 'A', 'R', 'E', 'Y', 'O', 'U'] Result = ['HOW', 'A', 'R', ... Read More
In this tutorial, we will learn how to perform Case Insensitive matching with JavaScript RegExp. Regular expressions can be declared in two ways − Using regular expressions literal, which start and end with slashes, and the pattern is placed in between. Calling the RegExp object constructor, which takes the pattern and flags in the parameters to create a regular expression. Users can use the below syntax to create a regular expression. Syntax //Using a regular expression literal const regex = /tutorial/i //Using RegExp constructor const regex2 = new RegExp('tutorial', 'i') In the above syntax, the regular expressions ... Read More
To check if all the characters in a string are alphanumeric, we can use the isalnum() method in Python and Regex also. First, let us understand what is alphanumeric. What is Alphanumeric? Alphanumeric includes both letters and numbers i.e., alphabet letter (a-z) and numbers (0-9). Examples: A, a, k, K, 8, 10, 20, etc. Let us see an example of an Alphanumeric string 8k9q2i3u4t Let us see an example of a string wherein all the characters aren’t Alphanumeric - $$###k9q2i3u4t Check If All the Characters in a String Are Alphanumeric using isalnum() We will use the built-in isalnum() ... Read More
In Python, the // is the double slash operator i.e. Floor Divison. The // operator is used to perform division that rounds the result down to the nearest integer. The usage of the // operator is quite easy. We will also compare the results with single slash division. Let us first see the syntax: Syntax of // (double slash) Operator The a and b are 1st and 2nd number: a // b Example of // (double slash) Operator Let us now see an example to implement the double slash operator in Python - a = 37 b = 11 ... Read More
In this tutorial, we will learn how to include JavaScript in HTML Documents. To include JavaScript in HTML Documents, use the tag. JavaScript can be implemented using JavaScript statements that are placed within the ... . You can place the tags, containing your JavaScript, anywhere within your web page, but it is normally recommended that you should keep it within the tags. We will discuss the following three approaches to include JavaScript in HTML documents − Embedding code (within head or body) Inline Code (inside any element) External file (outside the HTML file) By Embedding ... Read More
To serialize and de-serialize a Python object structure, we have the Pickle module in Python. The pickle module implements binary protocols for serializing and de-serializing a Python object structure. Pickling is the process through which a Python object hierarchy is converted into a byte stream. To serialize an object hierarchy, you simply call the dumps() function. Unpickling is the inverse operation. A byte stream from a binary file or bytes-like object is converted back into an object hierarchy. To de-serialize a data stream, you call the loads() function. Pickling and unpickling are alternatively known as serialization. What can be pickled ... Read More
In today's world, almost every website uses JavaScript. Web applications are becoming more complex and more user-interactive, and this has caused performance issues. It results in a poor user experience, which is not desirable for any web application. Different factors cause poor performance, long loading times, and long response times. In this tutorial, we will discuss all of these factors and how to resolve this issue and improve the performance of JavaScript. Light and Compact Code The first thing to improve the performance of JavaScript is to write light and compact code. The JavaScript code can have multiple modules and ... Read More
In this article, we will learn about the advantages of a Numpy array with a Nested List in Python. The Numpy array definitely has advantages over a Nested. Let’s see the reasons − The array in Numpy executes faster than a Nested List. A Nested List consumes more memory than a Nested List. Numpy Array NumPy is an N-dimensional array type called ndarray. It describes the collection of items of the same type. Items in the collection can be accessed using a zero-based index. Every item in an ndarray takes the same size of block in the memory. ... Read More
In this tutorial, we will learn how to handle tabs, line breaks, and whitespace in a text in JavaScript. To handle tabs, line breaks, and whitespace in text in JavaScript, we can use the whiteSpace property. This property has seven attributes − normal nowrap pre pre-line pre-wrap initial inherit Generally, in HTML we use the entity for multiple spaces and the tag to get line break. But in JavaScript, we use different attribute properties (mainly the normal and pre) of white-space properties to handle the tabs, line breaks, and multiple whitespaces. The details of these two ... Read More
In this tutorial, we will learn how to play a multimedia file using JavaScript. The multimedia file is the audio and video files. The multimedia files can be of different formats. wav and mp3 are two examples of audio file formats, whereas mp4 and mkv are examples of video file formats. In HTML, multimedia files can be shown easily using different tags. We use the video tag for showing a video, and for audio, we use the audio tag. These two tags are quite similar, and many attributes are the same in both tags. The "src" attribute defines the path ... Read More