Articles about IT & AI

If you decided you want to be a programmer, you have to remember that it means you are going to learn constantly. It doesn’t matter if you’ve just started, or if you have an experience, there will be something new, you want to master. Of course, at the beginning of your programming adventure, you have much more to learn. In the beginning, everything may seem very exciting. After you gathered all the sources, courses, books, and all you need, it may seem like you are going to study for ages to complete everything and reach your goal.

Intro to Slicing in Python Slicing in Python is a feature that enables accessing parts of sequences like strings, tuples, and lists. You can also use them to modify or delete the items of mutable sequences such as lists. Slices can also be applied on third-party objects like NumPy arrays, as well as Pandas series and data frames. Slicing enables writing clean, concise, and readable code. This article shows how to access, modify, and delete items with indices and slices, as well as how to use the built-in class slice().

DOM (Document Object Model) is a fundamental concept in front-end, and for sure, everyone who tried to learn programming has heard about it more than once. For beginners, it’s not so easy to understand what it exactly is and how to manipulate it. DOM manipulation isn’t so easy and comfortable, and the most important, it brings a lot of issues with performance. Nowadays, there are two essential concepts of DOM came with progressive web frameworks like Angular, React.

Python is one of the most popular and widely used programming languages of today. It’s applied by beginners and professionals, startups and large companies, academia and commercial entities. As a general-purpose and multi-platform programming language, it has a variety of applications. Python and most of the stuff in its ecosystem are free and open-source. There is a large, dedicated, and friendly community of developers and educators who support the development of Python and the related libraries and help people learn and master Python.

What are javascript classes Classes are a fundamental concept in object-oriented programming, and they are used in many programming languages, but it wasn’t like this in Javascript. Until ECMAScript2015, known as ES6, classes didn’t exist in JS. In 2015 with the update classes were introduced as syntactic sugar for the existing prototype inheritance model. What classes bring is a more comfortable and more readable syntax for objects and inheritance.

Scikit-learn is one of the most widely-used Python packages for data science and machine learning. It enables you to perform many operations and provides a variety of algorithms. Scikit-learn also offers excellent documentation about its classes, methods, and functions, as well as the explanations on the background of used algorithms. Scikit-learn supports: data preprocessing, dimensionality reduction, model selection, regression, classification, cluster analysis. It also provides several datasets you can use to test your models.

Function in programming is one of the most basic elements. It is a set of statements that perform some activity to get the result. In lots of cases, the action is performed using the data which are provided as input. The statements in the function are executed every time the function is invoked. Functions are used to avoid repeating the same code. The idea is to gather tasks that are executed more than ones into a function and then call the function wherever you want to run that code.

Python has several collection data types — the types that might hold multiple data items at once. Lists are immutable and ordered Python sequence collections.To be more precise, the collections don’t store data items. They keep the references to them. You can have the references to the objects of different types (integers, floating-point numbers, complex numbers, Booleans, strings, other lists or tuples, sets or dictionaries, custom-defined types, and so on) in one list.

Machine learning is about using sample data to build mathematical models that enable computer systems to perform tasks without obtaining explicit instructions. Image recognition, self-driving vehicles, Internet search engines, computer vision, spam email filtering, and many other systems use machine learning. It’s also applied in financial forecasts, medical diagnostics, fraud detection, and so on. Machine learning is a vast and promising area. It offers exciting solutions to real-world problems as well as a variety of well-paid jobs.

Every year since 2015, new ECMAScript features are released. Creating a new ECMAScript standard has four stages, from stage 0 to stage 3 it is mostly planning, and drafts and stage 4 is final. It’s possible to use the newest features in Google Chrome version 72. Let’s take a look at what exactly ES2019 brings us: Object.fromEntries(), trimStart() and trimEnd(), flat(), flatMap(), Symbol object description property, catch optional binging, well formatted JSON.