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In this article, we will learn how to get a negation of a Boolean in Python. In Python, the Boolean datatype is the built-in data type. It denotes the True or False values. For example, 520 is False. In this article, we will print the negation of a Boolean variable. The following are the various methods to accomplish this task − Using the “~” operator Using “not” Operator Using Operator Module Using Minus the value from ‘1’ Using bitwise_not(), logical_not() of Numpy Module Method 1: Using the “~” operator The negation of the operand can be returned using ... Read More
Introduction XPath is a powerful language used for navigating and selecting elements within an XML document. It is commonly used in conjunction with XSLT, a language used for transforming XML documents, to extract specific information from a document. In this article, we will discuss how to evaluate XPath expressions in the Linux command line, using the command-line tool xmllint. Installing xmllint Before we can begin evaluating XPath expressions in the Linux command line, we must first install xmllint. xmllint is part of the libxml2 library, which is included in most Linux distributions. To check if xmllint is already installed on ... Read More
In this article, we will learn how to write a swift program to remove the last given number of items from the array. An array is used to store elements of same data type in an order. So, here we use the following methods to remove the last given number of items from the array − Using removeLast(_:) function Using dropLast(_:) function Using removeSubrange() function Method 1: Using removeLast(_:) Function Swift provide an in-built function named as removeLast() function to remove the specified number of items from the end of the array. Syntax func removeLast(_x: Int) ... Read More
In this article, we will learn how to write a swift program to remove the first given number of items from the array. An array is used to store elements of same data type in an order. So, here we use the following methods to remove the first given number of items from the array − Using removeFirst(_:) function Using dropFirst(_:) function Using removeSubrange() function Method 1: Using removeFirst(_:) Function Swift provide an in-built function named as removeFirst() function to remove the specified number of items from the start of the array. Syntax func removeFirst(_x: Int) ... Read More
In this article, we will learn how to write a swift program to print object of a class. A class object is known as an instance of a class. For example, colour is a class then obj1, obj2, obj3 and obj4 are the objects from the class. A class can have multiple objects. Syntax var objectname = Classname() Here, using the above syntax we can create an object of a class. Algorithm Step 1 − Create a class with properties and a constructor. Step 2 − Create a function to print the object of the given class. Step ... Read More
In this article, we will learn how to write a swift program to get the last given number of items from the array. An array is used to store elements of same data type in an order. So, here we are using the following methods to get the last given number of items from the array − Using user defined function Using suffix(_:) function Using suffix(from:) function Method 1: Using a user-defined function To get the last given number of items from the array we can create a function. This function will return an array containing the ... Read More
In this article, we will learn how to write a swift program to get the first given number of items from the array. An array stores elements of the same data type in order. Therefore, here we use the following methods to get the first given number of items from the array − Using subscript with range Using prefix(_:) function Using prefix(upTo:) function Method 1: Using subscript with range To get the first given number of items from the array we can use subscript with different range operators like closed range operator, closed range operator with one-sided ranges, ... Read More
In this article, we will learn how to write a swift program to fill an array with a specific element. An array is used to store elements of same data type in an order whereas a set is used to store distinct elements of same data type without any definite order. In an array, every element has an index. The array index is start from 0 and goes up to N-1. Here N represent the total number of array elements. We can fill an array with a specified element using the following methods − Using user defined function Using ... Read More
In this article, we will learn how to check if a string contains an element from a list in python. Methods Used Using Nested For Loops Using List Comprehension Using any() function Using the find() function Example Assume we have taken an input string and input list. We will now check whether the input string contains at least any one input list element. Input inputString = "tutorialspoint is a best learning platform for coding" inputList = ['hello', 'tutorialspoint', 'python'] Output YES, the string contains elements from the input list In the above example, the ... Read More
In this article, we will learn a python program to convert the string elements to uppercase for the given selective indices. Methods Used The following are the various methods to accomplish this task − Using For Loop and upper() function Using List Comprehension Using index() & join() functions Example Assume we have taken an input string and a list containing index values. We will now convert the characters of an input string to uppercase at those given indices and print the resultant string. Input inputString = 'hello tutorialspoint python' indexList = [0, 6, 8, 10, 15, ... Read More