ChinnapongShutterstockOne of the most effective ways to store and retrieve data in a targeted manner is to use key-value pairs. In Java, you can use the HashMap class to do this. In this tutorial, we explain what a Java HashMap is and how the class works using practical examples. We’ll look at how to…
sdecoretShutterstockThe most important factor in any application written or used with the Java programming language is the Java main() method. After all, it serves as the entry point for every Java program. In this article, we’ll explain exactly what the main() method in Java is, how it works and…
UndreyShutterstockYou can use various methods to determine the length of an array in C. Each approach comes with its own set of advantages and disadvantages. It’s best to let the goals and requirements of your codebase guide you. In this tutorial, we’ll explore the most effective functions for…
Mr. KosalshutterstockIn Python, there are various ways you can remove and replace unwanted characters from strings. You can use simple loops, list comprehensions, built-in functions like str.replace() and regular expressions. In this article, we’ll take a look at these different approaches, using…
BEST-BACKGROUNDSShutterstockWhile loops let you repeatedly execute a specific block of code in R. This forms the basis for many kinds of algorithms. In this dedicated article we’ll look at how these loops work and show you how to use while loops in R language, as well as what they can be used for using R…
Python multiprocessing lets you tackle tasks concurrently across multiple processor cores, ramping up speed for compute-heavy or time-sensitive jobs. In this tutorial, we’ll dive into the advantage of multiprocessing and look at tools that Python provides so you can see how it…
REDPIXEL.PLshutterstockTypeScript functions play a crucial role in software development. In particular, TypeScript helps to avoid common JavaScript problems such as type conversion errors. Here you can find out everything you need to know about declaring types, parameters and return values. We’ll also…
fizkesShutterstockR vectors let you store a sequence of data that is of the same type in bulk. R vectors not only let you carry out calculations efficiently, but they can also be used, for example, to apply filter functions to many kinds of data at the same time. Find out exactly what R vectors…
With Python’s staticmethod(), you can structure functions within a class that don’t need direct access to instance data. This enhances functionality encapsulation and reduces the risk of side effects. This tutorial illustrates how to define and use static methods in Python and…
Python f-strings are easy to use. They allow you to directly embed variables and expressions into a string, making your code clearer and easier to understand. Compared with other string formats, f-strings enable you to produce more concise code. In this tutorial, we show you how…
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