Programming Articles - Page 378 of 3363

In Haskell we can use read functions and Data.char library to find if a given string is numeric or not. The following example will give you a clear idea about the valid numeric values. For example, 121, 12321, and 1221 if entered as string are valid numeric values. Algorithm Step 1 − The isNumeric function using reads function is defined Step 2 − Program execution will be started from main function. The main() function has whole control of the program. It is written as main = do. In the main function, the string is passed to the isNumeric function. ... Read More

This tutorial will help us in checking if any number is palindrome number or not using user-defined function and boolean functions in haskell. A palindrome number is a number that remains the same when its digits are reversed. The following example will give you a clear idea about Palindrome number. For example, 121, 12321, and 1221 are palindrome numbers, while 123, 1234, and 1212 are not. Algorithm Step 1 − The isPalindrome function using reverse function is defined as, isPalindrome str = str == reverse str. Step 2 − Program execution will be started from main function. The ... Read More

In this article we are going to use the internal function of Haskell like Data.complex and Prelude to create a complex number from a given imaginary parts. This tutorial will help us in creating the complex number from the given imaginary part. The imaginary part of a complex number is the coefficient of the imaginary unit, typically represented by the symbol "i", in the standard form of the complex number. A complex number can be represented in standard form as a + bi, where a is the real part and b is the imaginary part. Algorithm Step 1 − ... Read More

Python is an interpreted, object–oriented, high level, programming language with dynamic semantics. Developed by Gudio Van Rossum in 1991. It supports multiple programming paradigms, including structured, object-oriented and functional programming. Before diving deep into the topic let’s first brush up the basic concepts related to the question provided to us. A dictionary is a group of items that are unique, changing, and ordered. Curly brackets are used in dictionary writing, and they contain keys and values: The key name can be used to refer to dictionary objects. Data values are kept as key:value pairs in dictionaries. Ordered and unordered ... Read More

Dictionaries are known as the collection data types. They store data in the form of key value pair. They are ordered and changeable i.e., they follow a particular sequence and are indexed. We can change the values for a key and therefore it is manipulative or changeable. Dictionaries does not support duplication of data. Each key can have multiple values associated with it but a single value cannot have more than one key. We can use dictionaries to perform numerous operations. The entire mechanism depends upon the stored values. In this article, we will discuss the techniques that can be ... Read More

Dictionaries are used to store data values in key:value pairs like maps (which unlike other data types holds only a single value as an element). key:value is provided in dictionaries to make it more effective. Keys are unique. Dictionary key must be unique. So, no duplicate values are allowed in dictionaries. Dictionaries items are ordered, changeable, immutable. Changeable means here is that, we can add or remove items after the dictionaries are created. In this article, we will know about how to find a largest element in a dictionary by using different functions. There are many functions to find ... Read More

Dictionaries are used to store data values in key:value pairs like maps (which unlike other data types holds only a single value as an element). key:value is provided in dictionaries to make it more effective. Keys are unique. Dictionary key must be unique. So, no duplicate values are allowed in dictionaries. Dictionaries items are ordered, changeable, immutable. Changeable means here is that, we can add or remove items after the dictionaries are created. In this article, we will know about how to search an element in dictionary by using different functions. There are many functions to search an element ... Read More

High-level, all-purpose Python is a very well-liked programming language. Python is utilised for cutting-edge software development projects like web development and machine learning applications. In this article, we will be learning various methods for adding elements to a dictionary. What do You Understand From Dictionary in Python? A dictionary in Python stores a key: value pair, unlike other Data Types that only contain a single value as an element. It is used to store data values like a map. The dictionary includes key-value pairs to help it become more efficient. In a dictionary, each key-value pair is separated ... Read More

In Swift, you can use the weak keyword to declare an array of weak objects. In this article, we will use the weak keyword to store the weak objects or references in an array. Weak References Weak references are one of the solutions to the retain cycle problem in Swift. Note that a weak reference does not increment or decrement the reference count of an object. They can be deallocated even if ARC has a reference count greater than 1. Basically, we use the weak keyword in Swift to mark a reference as weak. Also, a weak reference cannot be ... Read More

Dictionaries are used to store data values in key:value pairs like maps (which unlike other data types holds only a single value as an element). key:value is provided in dictionaries to make it more effective. Keys are unique. Dictionary key must be unique. So, no duplicate values are allowed in dictionaries. Dictionaries items are ordered, changeable, immutable. Changeable means here is that, we can add or remove items after the dictionaries are created. In python, dictionaries are defined as object with the data type ‘dict’. The values in dictionaries items can be of any data type like string, integer, Boolean ... Read More