This can be helpful when you need the latest file inside a directory for processing in a shell script:
If you did file operations inside a shell or for example using Nautilus, it can take quite a while until...
Take care when trying to set attributes to nil in a blueprint. Given the following master blueprint: Story.blueprint do
If you get an ActiveRecord::RecordNotSaved error, a method inside one of your model's callback chains (before_save etc...
Lately, we’ve been exploring ways to offer web apps that perform like native apps on mobile devices. For this...
Sometimes the order in which strings appear on a page matters to you. Spreewald gives you steps like these:
When you do tags with acts-as-taggable-on and want to preload associated tags, you can do so with...
Did you use the :select option in a find, and forgot to include foo?
Note: We are talking about Machinist 1 here, Machinist 2 may have solved this or might require a different approach...
You need to install the following packages before you can build the Nokogiri gem: sudo apt-get install libxml2-dev...
If you want to see how long your database queries actually take, you need to disable MySQL's query cache...
If you have problems with SSH session timing out, add the following to your /etc/.ssh/config: Host * ServerAliveInterval 55 ServerAliveCountMax 2
Capybara's has_css? matcher has a couple of options you might find useful. Check that a selector appears a...
Hooks lets you define hooks declaratively in your ruby class. You can add callbacks to your hook, which will be...
This post will describe how I stumbled upon a code path in the Linux kernel which allows external programs to...
It can be useful to have a Ruby expression like condition ? positive_case : negative_case in MySQL queries:
[ ] [ ]= ** ! ~ + - * / % + - >> << & ^ | <= < > >= <=> == === != =~ !~ && || .. ... ? : = %= { /= -= += |= &= >>= <<= *= &&= ||= **= defined? not or and if unless while until begin/end For more information see Table 18.4 in The Pragmatic Programmer's...
A good tool to generate strong passwords and secrets is "apg". You can get it with sudo apt-get install...
Inside before :each blocks you can refer to variables that you introduce via let later on. They do not need...
You need to install the following packages before you can build the Paperclip gem: sudo apt-get install imagemagick librmagick...
If you have several submit elements (inputs or buttons with type="submit") that each cause different things to happen (e.g...
If you need to call a state_machine event and do not want to re-define resource_controller's create...
These steps are now part of Spreewald. This note describes a Cucumber step that lets you write this:
Note that you should disable the Java plug-in in your browsers after installation. Ubuntu >= 12.04 Java 11