An Introduction to SQL Join

Users of relational databases want all the data they need at their fingertips, while the database designers want to responsibly “decompose” the data into the smallest possible and most efficient tables. There’s always a tension between ease and efficiency at scale.

The SQL Join operation satisfyingly bridges this tension, giving you the power to derive tables that contain exactly the data you need.

SQL Join generates a new (temporary or permanent) table from one or more tables by combining columns based on the way the Join is invoked. There’s also a “self-join” variant to groom an unruly table into something more manageable.



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Becoming a Full Stack Web Developer: What You Need to Know

Full stack web developers are an integral part of the technology landscape, and as technology requirements grow — especially among businesses — the need for skilled professionals in these roles will increase

According to the 2020 Stack Overflow Developer Survey, 55% of working technologists consider themselves full stack developers, while 37.1% call themselves front-end developers and 55.2% prefer the title back-end developer.

With remote hiring at an all-time high, and top companies around the world looking for talent, there’s never been a better time to become a full stack web developer. 

Here’s how you can become a full stack web developer.



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Java Design Patterns

Despite declarative programming styles on the rise, object-oriented programming (OOP) is clearly here to stay. After all, it still provides the most natural way of building user interfaces and lends itself to organized, systemized applications. But an understanding of OOP isn’t complete without sound knowledge of the design patterns that organize object-oriented programs.

In this article, we’ll explore the origins of these design patterns and cover the benefits of using them. We’ll also dive into three specific design patterns and how you can implement them when programming with Java.



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The Many Types of Javascript For Loop

For the uninitiated, “For loops” are programming statements that examine every element an object contains. The Javascript standard contains multiple types of for loops. You can apply each one in a different programming context.

All Javascript for loops have the same basic structure. They start with the word “for” followed by an iteration method in parentheses. Instructions for manipulating elements come between curly braces after the iteration method.



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What Is a Python Package?

Packages are an essential building block in programming. Without packages, we’d spend lots of time writing code that’s already been written. Imagine having to write code from scratch every time you wanted to parse a file in a particular format. You’d never get anything done! That’s why we always want to use packages.

In this tutorial, we’ll walk you through the terminology of Python modules and packages, before showing you how to install and use packages in your Python code. We’ll then touch on how to create your own Python packages, and uncover some easter eggs. Let’s jump right in!



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How to Create Partial Functions in Python

Have you ever calculated your potential weekly income by multiplying a variety of numbers by 40?

What about using the same opening lines while inserting different names in addressing a letter to a variety of recipients?

Developers often face the issue of supplying a variety of inputs to a single object. This can be tedious without the right tooling, but Python luckily has partial functions to speed the process along. 

Below you’ll learn about partial functions, including how to create them and how they’re applied in everyday Python programming.



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How to Master Python: A Tutorial

With machine learning, e-commerce and other cutting-edge technologies here to stay, so too are their enabling languages. Python is perhaps the preeminent programming language, and mastering it offers attractive career options.

In this python tutorial, we’ll go over what makes Python so user-friendly before diving into some of the language’s concepts. We’ll also provide code snippets to demonstrate common, day-to-day programming practices.



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