Trim leading whitespace characters using trimMargin in Kotlin : Kotlin comes with a really handy function for string to trim leading whitespace characters easily. Known as trimMargin(), the definition of the function is as below : fun String.trimMargin(marginPrefix: String = “|”) – trimMargin is used to trim leading whitespace characters from each line of a […]
3 different ways in Javascript to find if a string contains a substring or not
3 different ways in Javascript to find if a string contains a substring or not : Finding out if a substring exists in a string or not is required in most development projects. There are a couple of different ways to check this in JavaScript. In this tutorial, we will learn three different ways in […]
How to drop a collection in MongoDB
Introduction : Dropping a collection will remove it from the database. It will also remove any index associated with the dropped collection. It also removes all indexes associated with the dropped collection. This method will obtain a write lock on the database. It will block all other operations till the drop is completed. Collection drop […]
Kotlin String template : Explanation with Examples
Introduction : String is a sequence of characters. All strings are of String class. For example, “Hello World” is a string. One more important thing is that String is immutable in Kotlin, i.e. you cann’t change any character of a string variable. Kotlin has introduced one new concept for string called string template. It allows […]
Media objects in Bootstrap : Explanation with example
Media Objects in Bootstrap : Media objects are used to create repetive contents with a media like image or videos. Think about a list of blog comments where user image is placed on the left side of the comment. We can easily create components like comments using media objects. Two classes are required for creating […]
Kotlin program to reverse an array ( 2 different ways )
Kotlin program to reverse an array : In this kotlin programming tutorial, we will learn how to reverse an array using two different ways : Reverse the array, assign this new array to a different variable and reverse an array in place. We are showing these examples for integer arrays, but you can use them […]
Kotlin example program to find out the largest element in an array
Kotlin example program to find out the largest element in an array : In this Kotlin example program, we will learn how to find out the largest element in an array of numbers. This is a simple example program that will show you how to find out the largest number in an array. Let’s take […]
Kotlin program to find out the factors of a number
Kotlin program to find out the factors of a number : In this tutorial, we will learn how to find out the factors of a number in Kotlin. We will show you two different ways : using a for loop and by using a while loop to solve this problem. The programs will print out […]
Python tutorial to check if a user is eligible for voting or not
Python tutorial to check if a user is eligible for voting or not : In this python tutorial, we will learn how to check if a user is eligible for voting or not. The program will take the age as an input from the user, check the eligibility and then print out the result. This […]
Data class in Kotlin : Explanation with example
Data class in Kotlin is used mainly for classes that holds only data. Keyword ‘data’ is used to mark a class data class. These classes cann’t be used to define any extra functionalities to a class. By default, this class will provide you few methods. In this tutorial, we will learn about data class in […]