As the web is being used for more and more tasks, expectations rise. Not only should web pages offer rich...

Method lookup Understand all the terms in How Ruby method lookup works, in particular: include extend singleton class

If you have problems installing a gem and get a error collect2: error: ld returned 1 exit status it's...

If the project team consists of at least 2 members, do a daily standup. It should not take much longer...

We organize our daily work with issues in our Linear workspace. Issue format A good issue needs to be precise...

Read the following material: World's shortest UI/UX design course Easiest Way to Pick UI Colors

For each movie in MovieDB, we want to track which other movie it was inspired by. For...

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Built-in matchers Get an overview of all the matchers that are built into RSpec. Play with some of...

Spreewald comes with a selector_for helper that matches an English term like the user's profile into a CSS...

You may encounter problems with passenger starting an application with an updated rails. If you find an error like this...

Understand how asynchronous JavaScript works: Read Henning's presentation about asynchronous Javascript (there's also a German video presentation...

In a web application you often need to move data between the client (HTML, Javascript) and the server (Ruby, Rails...

Exercise 1: Maps In MovieDB, add a new field “Principal filming location”. In a movie’s show view, geocode that...

Web security basics Einführung in die Web Security 🇩🇪 provides essentials for the topic of this card. Read following chapters:

Stepping forward from JavaScript Basics, the goal of this card is for you to be able to read and write...

Jasmine comes with two matchers that test for equality. The first is toBe: expect(first).toBe(second) toBe passes when...

In Capistrano 2, directories in shared_children used to be symlinked to the shared directory during the finalize_update task...

tl;dr: Use event.currentTarget unless you are absolutely certain that you need event.target. Since it hasn't been written down...

As developers we are dealing with many tasks every week. We need a system to organize ourselves. Goals After completing...

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Understand the differences between git diff and git diff --staged (or git diff --cached) Understand the difference between git...

In this card we will learn to write code that scales with a large number of database records. We will...

Read the following chapters from The Pragmatic Programmer, anniversary edition (in our library): Chapter 1, Topic 3: Software Entropy...

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Understand at least the following CSS concepts: Classes Selecting elements for styling Basic styling (color, typography, spacing)

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Understand why we test: Low defect rate without a QA department. Customer acceptance testing can concentrate on new features...