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Articles: 85

Joined: Jan 25, 2018

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Reading and Writing CSV Files in Kotlin with Apache Commons

In this article we'll be taking a look at how to read and write CSV files in Kotlin, specifically, using Apache Commons. Apache Commons Dependency Since we're working wih an external library, let's go ahead and import it into our Kotlin project. If you're using Maven, simply include the commons-csv...

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Mar 23, 2021·5 min read

Article

Python: Check if Array/List Contains Element/Value

In this tutorial, we'll take a look at how to check if a list contains an element or value in Python. We'll use a list of strings, containing a few animals: animals = ['Dog', 'Cat', 'Bird', 'Fish'] Check if List Contains Element With...

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Mar 05, 2021·4 min read

Article

Form Data Validation in Node.js with express-validator

It is imperative to carry out server-side validation when building applications - especially client-facing applications. The reason being, one can never rely on the user’s input alone; as these inputs sometimes contain bogus/malicious data. Client-side validation is a great way to sift through most of the input, but...

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Feb 03, 2021·9 min read

Article

How to Iterate Over a Dictionary in Python

Dictionaries are one of the most used data structures in all of software development, and for a good reason. They allow us to store our data in neat key, value pairs, which in turn gives us the ability to, on average, access our data in O(1) time. While using...

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Jan 22, 2021·4 min read

Article

How to Format Number as Currency String in Java

Currency is a very important part of our modern world. So, it's equally important for us to be able to properly express it in Java. In this tutorial, we'll go over how to format numbers as currency Strings in Java. Format Number as Currency String Here's how you can easily...

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Jan 20, 2021·4 min read

Article

How to Randomly Select Elements From a List in Python

Selecting a random element or value from a list is a common task - be it for randomized result from a list of recommendations or just a random prompt. In this article, we'll take a look at how to randomly select elements from a list in Python. We'll cover the...

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Jan 12, 2021·3 min read

Article

How to Use Global and Nonlocal Variables in Python

In this article we'll be taking a look at Global and Non-Local Variables in Python and how you to use them to avoid issues when writing code. We'll be starting off with a brief primer on variable scopes before we launch into the how and why of using global and...

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Jan 01, 2021·7 min read

Article

Ultimate Guide to Heatmaps in Seaborn with Python

A heatmap is a data visualization technique that uses color to show how a value of interest changes depending on the values of two other variables. For example, you could use a heatmap to understand how air pollution varies according to the time of day across a set of cities....

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Dec 29, 2020·21 min read

Article

How to Create a Confirmation Dialogue in Vue.js

A confirmation dialogue is a UI pattern where the user will be given a choice to continue with their action or to cancel it. It is commonly used with destructive or irreversible actions, to make sure that the user would indeed want to proceed. In this article,we'll be implementing...

Guest Contributor

Dec 23, 2020·6 min read