TLDR if you define a equality method for a class you must also implement def hash. Ruby has a lot...
Our CI setup frequently sees this error while running yarn install: yarn install v1.22.19 [1/4] Resolving packages... [2/4] Fetching packages...
Timecop is a great gem to set the current time in tests. However, it is easy to introduce flakyness to...
Usually, design development starts with drafts, sketches and prototypes. These are reviewed, refined and iterated until the final design is...
In a Jasmine spec you want to spy on a function that is imported by the code under test. This...
The cards editor has a feature "Cite other card" to create links to other cards in the same deck as...
You have some SVG files you want to use as icons on your website. How would you embed them?
Jasmine specs for the frontend often need some DOM elements to work with. Because creating them is such a common...
Jasmine specs that work with DOM elements often leave elements in the DOM after they're done. This will leak...
Variable fonts are popular for two reasons: they expand design possibilities and improve website performance. While the former statement is...
Large Rails projects tend to define multiple custom ways to format Dates or DateTimes. This often leads to duplicated format...
tl;dr The Chrome DevTools are a neat collection of tools for the daily work as a web developer. If...
tl;dr In Chrome DevTools in the Elements tab or in Firefox in the Inspector tab you can right click...
Git allows you to set push options when pushing a branch to the remote. You can use this to build...
Unpoly's [up-observe], [up-autosubmit] and [up-validate] as well as their programmatic variants up.observe() and up.autosubmit...
tl;dr Since Rails 7+ you can use ComparisonValidator for validations like greater_than, less_than, etc. on dates, numerics...
New versions of wkhtmltopdf dissallow file:// URLs by default. You can allow them by passing --enable-local-file-access.
You have uncommited changes (you can always check by using git status), which you want to discard.
tl;dr In RubyMine you can use find and replace with capture groups (.*?) and backreferences $1 (if you have several...
The robots.txt file and HTML tag can be used to control the behavior of search engine crawlers. Both have different...
Ruby's standard library includes a class for creating temporary directories. Similar to Tempfile it creates a unique directory name...
tl;dr Since Rails 6+ you can use before? and after? to check if a date/time is before or after...
Case studies and experiments demonstrating the impact of web performance optimization (WPO) on user experience and business metrics.
To allow HTTP 304 responses, Rails offers the fresh_when method for controllers. The most common way is to pass...