Article
Checking for substrings within a String is a fairly common task in programming. For example, sometimes we wish to break a String if it contains a delimiter at a point. Other times, we wish to alter the flow if a String contains (or lacks) a certain substring, which could be...
David Landup
In this tutorial, we are going to learn how we can perform image processing using the Python language. We are not going to restrict ourselves to a single library or framework; however, there is one that we will be using the most frequently, the Open CV library. We will start...
Muhammad Junaid Khalid
When writing any kind of code in Java, developers tend to work with objects more often than with primitive values (int, boolean, etc). This is because objects are at the very essence of object-oriented programming: they allow a programmer to write abstract code in a clean and structured manner. Furthermore,...
Luka Čupić
In this article, we'll be breaking down the Builder Design Pattern and showing it's application in Java. Design Patterns are simply sets of standardized practices commonly used in the software development industry. They represent solutions, provided by the community, to common problems faced in every-day tasks regarding software development. Knowing...
Guest Contributor
If you wanted to select elements from an array or object before the ES2015 update to JavaScript, you would have to individually select them or use a loop. The ES2015 specification introduced the destructuring assignment, a quicker way to retrieve array elements or object properties into variables. In this article,...
In this post, we will dive into MongoDB as a data store from a Python perspective. To that end, we'll write a simple script to showcase what we can achieve and any benefits we can reap from it. Web applications, like many other software applications, are powered by data. The...
Robley Gori
Checking if a file or directory exists is a simple and important operation in many tasks. Before accessing a file, we should check if it exists to avoid a NullPointerException. The same goes for directories. While some functions may create a new file/directory if the requested one doesn't exist,...
Sorting, although a basic operation, is one of the most important operations a computer should perform. It is a building block in many other algorithms and procedures, such as searching and merging. Knowing different sorting algorithms could help you better understand the ideas behind the different algorithms, as well as...
Sajjad Heydari
Test "mocks" are objects that replace real objects while simulating their functions. A mock also has expectations about how the functions being tested will be used. In some unit test cases we may want to combine the functionality of spies, to observe a method's behavior under call, and...
Allan Mogusu
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