Some pseudo-elements need to be addressed with vendor prefixes. E.g. ::selection is not supported by Firefox, you need to...

Sometimes you want/have to send specific http(s) requests. You can do that easy with curl or just write the...

ImageMagick has a command line tool called identify which can read image metadata: >identify -verbose DSC00136.JPG Image: DSC00136.JPG Format: JPEG...

makandra dev

You can start vim with a read-only option. This prevents making accidentally changes in files you don't want...

Note: The behaviour of Spreewald's within step is as described below for version < 1.9.0; For Spreewald >= 1.9.0 it is...

This card is just about creating simple PostgreSQL dumps. This is no instruction for a backup strategy nor a guide...

This is not an issue in newer versions of HAML (starting with 5.0.0), as the ugly-option was removed...

There are various ways to run external commands from within Ruby, but the most powerful ones are Open3.capture3 and Open3.popen3...

makandra dev
iamvdo.me

Line-height and vertical-align are simple CSS properties. So simple that most of us are convinced to fully understand...

There seems to be a nasty bug in Chrome 56 when testing with Selenium and Capybara: Slashes are not written...

Just like we use gems on the server, we use third party JavaScript libraries in the browser. These typically provide...

We generally use multiple application servers (at least two) and you have to search on all of them if you...

If you use Angular 1.4+ together with Angular Animate, all ng-show, ng-hide, ng-class etc. are animated on...

First find the reference for the entry you want through looking at the stash: $ git stash list stash@{0}: WIP...

smashingmagazine.com

A comprehensive introduction to sending HTML emails. Intro: HTML email: Two words that, when combined, brings tears to a developer...

In general, you should not put a block element inside an inline element. So don't do this: text

Exercise 1: XML On the start page of your Movie DB, show the title of a random movie that is...

Building plain text emails with an .erb template doesn't allow you to indent code like you normally do in...

This card tries to summarize by example the different uses of heredoc. In Ruby << vs. <<- vs. <<~ In Rails strip_heredoc...

TL;DR Debugging problems with javascript errors in cucumber tests is sometimes easier in the browser. Run the test, stop...

clipboardjs.com

We used zeroclipboard.js in some of our projects but now we switched to clipboard.js because it does not rely on...

A haml angular 1 template with .thing(class="is-{{:: item.type }}") will be compiled (by haml) to which is not what...

If you are fine with the default console diff most of the time but only sometimes want to use an...

SVG is an acronym for "scalable vector graphics". SVGs should be used whenever an image can be described with vector...