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Python is a dynamically typed language, and the variable data types are inferred without explicit intervention by the developer. If we had code that requires a string to work correctly but lacked type hints, which are optional, how can we avoid errors if the variable used is not a string?...
Daniel Pimeh
Python is a dynamically typed language, and the variable data types are inferred without explicit intervention by the developer. If we had code that needed a list but lacked type hints, which are optional, how can we avoid errors if the variable used is not a list? In this tutorial,...
In this tutorial, we'll be taking a look at how to convert a JSON object into a Java Object using Jackson, an extremely popular data-binding library for Java. Specifically, we'll be working with this JSON object: { "name":"David", "position":"Software Engineer", "...
David Landup
In this tutorial, we'll take a look at how to sort a HashMap by key in Java. Let's go ahead and create a simple HashMap: Map<String, Integer> unsortedMap = new HashMap(); unsortedMap.put("John", 21); unsortedMap.put("Maria", 34); unsortedMap.put("Mark"...
In this tutorial, we'll take a look at how to sort a HashMap by value in Java. Let's go ahead and create a simple HashMap: Map<String, Integer> unsortedMap = new HashMap(); unsortedMap.put("John", 21); unsortedMap.put("Maria", 34); unsortedMap.put("Mark"...
In this article we'll be taking a look at how to read and write JSON files in Kotlin, specifically, using the Jackson library. To utilize Jackson, we'll want to add its jackson-module-kotlin dependency to our project. If you're using Maven, you can simply add: <dependency> <groupId>...
Alex Chirea
Building a web app almost always means dealing with data from a database. There are various databases to choose from, depending on your preference. In this guide, we shall be taking a look at how to integrate one of the most popular NoSQL databases - MongoDB - with the Flask...
Geoffery, Joseph
YAML stands for YAML Ain't Markup Language, it is a data-serialization language most commonly used for specifying project configuration details. The main motivation behind YAML is that it is designed to be in a format which is humanly friendly. With a glance we can get an understanding of the properties...
Taimoor Choudhary
In Linux, ls -l would list the files and directories in a particular path, with their names, dates, and sizes (disk usage). The first thing you'll notice using that command is that the size of directories is always shown as 4096 bytes (or 4,0K if you're using ls -lh)...
Ruslan Hasanov
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