Updated on May 21, 2015 in Learn
How to Choose the Right CSS Preprocessor
You’ve probably heard about CSS preprocessors by now, but haven’t quite plucked up the courage to try one because of the learning curve, or maybe because “preprocessor” just plain sounds intimidating. So let’s put those uncertainties at ease and go over…
Updated on June 11, 2019 in Learn
Java Basics for Android Development – Part 1
There are a number of ways to create apps for Android devices, but the recommended method for most developers is to write native apps using Java and the Android SDK. Java for Android apps is both similar and quite different…
Updated on October 14, 2017 in Learn
CSS Positioning: A Comprehensive Look
If you’ve come to grips with CSS-based layouts, then it’s likely that you’re using floats as the primary means to layout your pages. Maybe you’ve even started to experiment with some of CSS’s far-future layout techniques, in hopes that browser…
Updated on May 21, 2015 in Learn
HSLa Color Values in CSS – Quick Tip
In this CSS Quick Tip, we’ll learn how to define color values with the HSLa color model. HSLa stands for Hue, Saturation, Lightness, and alpha. This HSLa Color Values method is much more intuitive than RGBA or Hex values, allows…
Updated on May 21, 2015 in Learn
Rails 4 Strong Parameters
The Rails core team recently introduced a project called strong parameters. Strong parameters is the latest tool in the fight against mass assignment vulnerabilities. Let’s take the problem of your typical web form that creates a user. Your code might…
Updated on August 23, 2017 in Learn
Productivity is About Constraints and Concentration
The fact that there is only so much time in a day is a sobering thought. Many times we are left scratching our heads after a long day wondering, “what did I even get done today?”. Saying “No” The one…
Updated on September 11, 2023 in Learn
Quick Tip: How to Use the JavaScript Splice Method
In this Treehouse Quick Tip, Jim shows us how to use the JavaScript Splice Method. The splice method is used to manipulate arrays. The splice function can be used to remove elements from an array. The first argument in the…
Updated on May 21, 2015 in Learn
Getting Started with CSS – Part 2
In part 1 we covered basic CSS concepts like the cascade and CSS rules. In this article, we’ll take things a step further with the CSS box model and basic selector types. The CSS Box Model Understanding how the box…
Updated on May 21, 2015 in Learn
A Behind-the-Scenes Look at What Powers Ruby on Rails
What is Ruby on Rails? Ruby on Rails is a web development framework that makes it easy to write web applications. Rails was extracted from an application called Basecamp. When you start writing a Ruby on Rails application, it’s like…
Updated on June 30, 2015 in Learn
The Beginner’s Guide to Android
If you ask someone what an iPhone is, the answer is pretty obvious, and even people unfamiliar with iPhones are likely to be able to tell you pretty accurately what it is. But if you ask, “What’s an Android?” you…
Updated on May 21, 2015 in Learn
Getting Started with CSS – Part 1
This is the first of a two-part article on CSS, the most powerful tool we have available to us as web designers and developers. In this article, we’ll cover basic CSS concepts to get us started. What is CSS? CSS…
Updated on May 21, 2015 in Learn
Quick Tip: How to Edit HTML
In this Treehouse Quick Tip, we’re going to learn how to edit HTML. Before I tell you what we should do, let’s go over what we should not do. Make sure that you don’t edit your HTML in a word…