let vs. var vs. const in JavaScript
In JavaScript, we can create a variable using three keywords: let var const What is Scope? Scope is the accessibility during runtime of variables, fun...
What is a pass statement in Python?
A pass statement is an empty/null statement that is considered as a placeholder for future code. When a user doesn’t want to write a code, or is not a...
What are shallow and deep copies?
Shallow copy In a shallow copy , the references of an object are copied in another object when we copy the object. The referenced object itself is not...
What is a uniform cost search algorithm?
Search algorithms are used to resolve search problems. For example, search for the shortest path between two given points, searching for a goal, and s...
uniform cost search
ucs
algorithm
How to check for Palindrome numbers in Java
A palindrome number is a number that has the same value as that of the original number when reversed, e.g., 121, 111, 1223221. If you were to reverse ...
How to setup AWS VPC
AWS virtual private cloud (VPC) is a service provided by AWS that allows you to create and manage your virtual network infrastructure within the AWS c...
aws
vpc
virtual private cloud
amazon
cloud
Deep copying vs. shallow copying
Let’s take two objects of the same type (A and B) where the contents of A are to be copied into B. Let’s see how this copying will take place in the c...
What is an arrow function in JavaScript?
Arrow function or an arrow function expression is a more concise syntax for writing regular function expressions that allow us to write shorter and n...
Deep learning
Deep learning is a subset of machine learning that involves using artificial neural networks to imitate the structure and the function of a human brai...
machine learning
ai
artific
data science
Vue vs. React
React is a JavaScript UI framework created by Facebook and made open source in May 2013. React is significantly more popular than Vue; at the time of ...
What are break and next statements in R?
Overview Loops are worth using when performing iterations. But what if we want to skip something in a loop or end a loop earlier than the complete ex...
What is the OptionalDouble.orElseGet method in Java?
In Java, the OptionalDouble object is a container object that may or may not contain a double value. The OptionalDouble class is present in the java.u...
How to track active widgets with dijit/focus
What is Dojo? The Dojo is a JavaScript toolkit (library) that provides many utility modules and functions to create a web application. We can save tim...
How to use cleantext.replace_punct() in Python
What is the clean-text package? clean-text is a third-party package used to pre-process text data to obtain a normalized text representation. The pac...
What is the ConcurrentLinkedQueue.offer() method in Java?
The ConcurrentLinkedQueue is thread-safe unbounded queue. The elements are ordered by FIFO (First-In-First-Out). The elements are inserted at the tai...
offer
java
concurrentlinkedqueue
What is the remove method in Mojo::DOM?
Overview The remove method removes the given HTML/XML element. This method is provided by the Mojo::DOM module, which is an HTML/XML DOM parser with C...
What is the strtolower method in PHP?
The strtolower method can convert all the alphabetical characters of the string to lowercase characters and returns the modified string as a new strin...
How to use Hashtable.put method in Java?
A HashTable is a collection of key-value pairs. The put method maps the passed value to the specified key in the Hashtable . Syntax public V put(K key...
What is the role and usage of events in Solidity contracts?
Key takeaways: Events in Solidity are essential for communication between smart contracts and external systems, allowing contracts to notify others of...
What is the LinkedHashSet.containsAll in Java?
The LinkedHashSet is similar to the HashSet except that it maintains the insertion order of elements, whereas HashSet does not. Read more about. Linke...
containsall
linkedhashset
java