According to Google – “In computer programming, a loop is a sequence of instructions that is continuously repeated until a certain condition is reached.” Now try to understand this. Why Loops are so important? Consider a situation- What if I ask you to print “Hello World” 4 times in Python. …
In Python, a dictionary is a collection type that is used to store data in the form of key-value pairs. A dictionary is ordered, changeable, and does not allow duplicate values. The factor that makes a dictionary different from lists, tuples or sets is that in a dictionary each value …
Just like the lists or tuples, a set in python is also one of the collection types. A set is unordered, unindexed, and unchangeable. It is written using curly braces. Example of a set: cities = {'Delhi', 'Mumbai', 'Hyderabad', 'Bhopal'} print(cities) Output: {‘Delhi’, ‘Mumbai’, ‘Hyderabad’, ‘Bhopal’} Set items are unordered …
Like lists, tuples are also used to store multiple values in a single variable. It is a collection that is ordered and unchangeable. Unlike lists, Tuples are written with round brackets. Example sample_tuple = ("east", "west", "north", "south") print(sample_tuple) Output: (“east”, “west”, “north”, “south”) Tuples are ordered Tuples are ordered, …
In JavaScript, const is a keyword that is used to declare a variable whose value cannot be changed for the whole script. For example const hobby = 'Painting'; hobby = 'Dancing'; // This cannot be done. The above code will through an error like this – TypeError: Assignment to constant …
A list in Python is a datatype that is used to store multiple values. A list can be formed by assigning different values inside square brackets and separated by commas. Example mylist = ["India", "France", "Australia", "Nepal"] print(mylist) Output: [“India”, “France”, “Australia”, “Nepal”] Items in list are ordered, indexed, and …
By far we have seen how to declare a variable in JavaScript. We have done this using the ‘var’ keyword. But there is another keyword in JavaScript which is used to declare a variable, and it is the JavaScript ‘let’ keyword. The let keyword was introduced in 2015 with ES6. …
In PHP, a constant is like a variable except for one fact its value cannot be changed once it has been created. A valid constant name can be started with a letter or an underscore(_). There is no need to put the dollar sign($), as we do with a variable. …
Operators in C are used to perform some operations on variables and constant values. See the example below #include <stdio.h> int main(){ int a = 4, b = 5, c; c = a + b; return 0; } In the above example, we are using the addition operator(+) to add …
There are two ways to get the output in PHP – echo, and print. echo and print statements in PHP are somehow similar but have some differences as well. echo statement does not have a return value while print has a return value of 1. echo can have multiple parameters …
